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CBSE - IX - Physics - Motion

an object completes one round of circle of radius 7m in 20s.. distance travel after 10s is?? 

Asked by ujjwalviky2003 27th October 2017, 5:27 PM
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CBSE - IX - Physics - Motion

If an object is changing its velocity at uniform rate from u to v taken time t , what will be the sum of average velocities and acceleration?

Asked by ashishmaskara 25th July 2017, 3:25 PM
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CBSE - IX - Physics - Motion

Q.1. A quantity measured to be -30 m/s. Is it speed or velocity? Give a reason in your favour.

Asked by sbidipak 30th May 2017, 4:04 PM
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CBSE - IX - Physics - Motion

Give an example of the motion of a body moving with a constant speed but with a variable velocity. Draw a diagram to represent such a motion

Asked by Topperlearning User 10th June 2016, 11:19 AM
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CBSE - IX - Physics - Motion

Distinguish between average speed and average velocity.

Asked by Topperlearning User 10th June 2016, 11:17 AM
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CBSE - IX - Physics - Motion

Distinguish between uniform velocity and variable velocity.

Asked by Topperlearning User 10th June 2016, 11:14 AM
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CBSE - IX - Physics - Motion

Arrange the following speeds in increasing order. 10 m s-1, 1 km min-1 and 18 km h-1.

Asked by Topperlearning User 10th June 2016, 11:08 AM
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CBSE - IX - Physics - Motion

An object moves 18 m in the first 3 seconds and 22 m in the next 3 seconds while it travels 14 m in the last 3 seconds. Calculate the average speed.  

Asked by Topperlearning User 10th June 2016, 11:00 AM
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CBSE - IX - Physics - Motion

Kalpesh, before going out, takes the reading of odometer of his motorcycle. It was 8,245 km. Driving at uniform velocity of 60 km/h for 30 min on a straight highway; he reaches his friend’s village. What would be the odometer reading of his motorcycle there?

Asked by Topperlearning User 10th June 2016, 10:55 AM
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CBSE - IX - Physics - Motion

Sam, while driving to school, computes the average speed for his trip to be 20 km/h. On his return trip along the same route, there is less traffic and the average speed is 30 km/h. What is the average speed for Sam’s trip?

Asked by Topperlearning User 10th June 2016, 10:51 AM
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CBSE - IX - Physics - Motion

A moving body travels distance s with constant speed v1 and travels distance s with uniform speed v2. Prove that his average speed is begin mathsize 12px style fraction numerator 2 straight v subscript 1 straight v subscript 2 over denominator straight v subscript 1 plus straight v subscript 2 end fraction end style.

Asked by Topperlearning User 10th June 2016, 10:49 AM
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CBSE - IX - Physics - Motion

Joseph jogs from one end A to the other end B of a straight 300 m road in 2 minutes 30 seconds and then turns around and jogs 100 m back to point C in another 1 minute. What are Joseph’s average speeds and velocities in jogging (a) from A to B and (b) from A to C?

Asked by Topperlearning User 10th June 2016, 10:20 AM
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CBSE - IX - Physics - Motion

What is the speed of a sailboat that is traveling 100 meters in 120 seconds?

Asked by Topperlearning User 10th June 2016, 10:08 AM
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CBSE - IX - Physics - Motion

A scooter travels a distance of 600 m in 20 seconds southwards. (a) What is the speed of the scooter? (b) What is the velocity of the scooter?

Asked by Topperlearning User 10th June 2016, 9:59 AM
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CBSE - IX - Physics - Motion

A train moving with a uniform speed covers a distance of 1200 m in 20 s. Calculate (i) the velocity of the train (ii) the time taken to cover 3000 m.

Asked by Topperlearning User 10th June 2016, 9:57 AM
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CBSE - IX - Physics - Motion

A body travels from A to B in 10 seconds with a speed of 50 km/h and returns with a speed of 100 km/h in 5 s. Find the average speed. Also find the average velocity for the whole journey.

Asked by Topperlearning User 10th June 2016, 9:53 AM
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CBSE - IX - Physics - Motion

A body moves from point O to point A, and then to point B (to the east of O) in 5 s. What is the average speed and average velocity of the body?     

Asked by Topperlearning User 10th June 2016, 9:45 AM
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CBSE - IX - Physics - Motion

If a cyclist has traveled a distance of 12,250 meters in one hour along the southwest direction, what would the velocity of the cyclist be?  

Asked by Topperlearning User 10th June 2016, 9:41 AM
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CBSE - IX - Physics - Motion

During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, 3 × 108 ms-1.

Asked by Topperlearning User 10th June 2016, 9:35 AM
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CBSE - IX - Physics - Motion

Explain average speed.

Asked by Topperlearning User 9th June 2016, 12:37 PM
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CBSE - IX - Physics - Motion

Can average speed of a body in motion be non-zero? Can its average velocity be zero?

Asked by Topperlearning User 9th June 2016, 12:35 PM
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CBSE - IX - Physics - Motion

CAN YOU EXPLAIN THE MAGNITUDE OF DISPLACEMENT
 

Asked by pranjal 19th May 2016, 10:41 PM
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CBSE - IX - Physics - Motion

A train starting from rest has velocity of 72 km/h in 5 min . Calculate the distance travelled.

Asked by Anuradha 15th May 2016, 1:09 PM
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CBSE - IX - Physics - Motion

A body moves with a velocity of 10 m/s. if the motion is uniform,what will be the velocity after 10 s.

Asked by swaijitsingh 12th May 2016, 6:54 PM
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CBSE - IX - Physics - Motion

What is si unit of uniform motion?
 
 

Asked by leenbindra 3rd May 2016, 8:27 PM
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CBSE - IX - Physics - Motion

A pitcher throws his fast ball horizontally at 42.1 meters per second. How far does it drop before
crossing the plate, 18.3 meters away ?

Asked by a.behera67 30th January 2016, 6:35 PM
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CBSE - IX - Physics - Motion

A man travels some distance at a speed of 12km/hr and returned at 9km/hr.  If the total time taken by the man is 2hrs and 20minutes.  Find the distance

Asked by surajsugitha 12th November 2015, 7:39 PM
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CBSE - IX - Physics - Motion

a boy runs for 10 minutes at a uniform speed of 9km/hr.At what speed should he run for the next 20 minute so that the average speed comes to 12km/hr? expert, please tell me the procedure

Asked by my3shyll 6th September 2015, 12:05 PM
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CBSE - IX - Physics - Motion

a bus starting from rest moves with a uniform accelaration of 0.1 ms-2 for 2 minutes .find a. the speed acquired, b. the distance travelled.

Asked by mahendra_soniya 3rd August 2015, 5:06 PM
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CBSE - IX - Physics - Motion

<div> <h3 class="f18" style="padding: 0px; margin: 0px; border: 0px; outline: 0px; vertical-align: baseline; font-family: Lato, Arial, Helvetica, sans-serif; color: #53555b; font-size: 17px !important; font-stretch: normal !important; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p style="padding: 0px; margin: 0px; border: 0px; outline: 0px; vertical-align: baseline; background: transparent;">The ratio of the heights from which two bodies are dropped is 3:5 respectively. The ratio of their final velocities is:</p> </h3> <div class="que_options PA15" style="padding: 15px; margin: 0px; border: 0px; outline: 0px; font-size: 18px; vertical-align: baseline; color: #53555b; font-family: Lato, Arial, Helvetica, sans-serif; line-height: 28px; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="MB15 f16" style="padding: 0px; margin: 0px 0px 15px; border: 0px; outline: 0px; font-size: 16px; vertical-align: baseline; font-stretch: normal; line-height: normal; background: transparent;"><label style="padding: 0px; margin: 0px; border: 0px; outline: 0px; vertical-align: baseline; background: transparent;"><input class="question_options_31642" style="padding: 0px; margin-top: 0px; margin-right: 10px; margin-left: 0px; vertical-align: middle;" name="question_options[31642]" type="radio" value="1" />&nbsp;<img class="Wirisformula" style="padding: 0px; margin: 0px; outline: 0px; vertical-align: middle !important; background: transparent;" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=73f04633b12ab8e2b7461df5ace47efb.png" alt="square root of 3 space : space square root of 5" align="middle" /></label></p> <p class="MB15 f16" style="padding: 0px; margin: 0px 0px 15px; border: 0px; outline: 0px; font-size: 16px; vertical-align: baseline; font-stretch: normal; line-height: normal; background: transparent;"><label style="padding: 0px; margin: 0px; border: 0px; outline: 0px; vertical-align: baseline; background: transparent;"><input class="question_options_31642" style="padding: 0px; margin-top: 0px; margin-right: 10px; margin-left: 0px; vertical-align: middle;" name="question_options[31642]" type="radio" value="0" />&nbsp;5 : 3</label></p> <p class="MB15 f16" style="padding: 0px; margin: 0px 0px 15px; border: 0px; outline: 0px; font-size: 16px; vertical-align: baseline; font-stretch: normal; line-height: normal; background: transparent;"><label style="padding: 0px; margin: 0px; border: 0px; outline: 0px; vertical-align: baseline; background: transparent;"><input class="question_options_31642" style="padding: 0px; margin-top: 0px; margin-right: 10px; margin-left: 0px; vertical-align: middle;" name="question_options[31642]" type="radio" value="0" />&nbsp;9 : 25</label></p> <p class="MB15 f16" style="padding: 0px; margin: 0px 0px 15px; border: 0px; outline: 0px; font-size: 16px; vertical-align: baseline; font-stretch: normal; line-height: normal; background: transparent;"><label style="padding: 0px; margin: 0px; border: 0px; outline: 0px; vertical-align: baseline; background: transparent;"><input class="question_options_31642" style="padding: 0px; margin-top: 0px; margin-right: 10px; margin-left: 0px; vertical-align: middle;" name="question_options[31642]" type="radio" value="0" />&nbsp;<img class="Wirisformula" style="padding: 0px; margin: 0px; outline: 0px; vertical-align: middle !important; background: transparent;" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=7fe9f5ab2bc30130049d7fc5edddf31d.png" alt="square root of 5 : space square root of 3" align="middle" /></label></p> </div> </div>

Asked by chinmaypjoshi123 26th June 2015, 1:41 PM
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CBSE - IX - Physics - Motion

Asked by ahujarajesh11 20th June 2015, 12:51 PM
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CBSE - IX - Physics - Motion

a body standing near the edge of a cliff 125m above a river throws a stone downwards with a speed of 10m/s. Find -
(i) with what speed will the stone hit water and,
(ii) how long will it take to descend 

Asked by rahulsarawgee04 16th June 2015, 11:39 AM
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CBSE - IX - Physics - Motion

WHAT IS MEAN BY VELOCITY?

Asked by amanansuresh 22nd April 2015, 8:11 PM
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CBSE - IX - Physics - Motion

Two racing cars of masses m1 and m2 are moving in circles of radii r1 and r2 respectively.
Their speeds are such that each makes a complete circle in the same length of time t.Find the ratio of angular speed of the first car to that of the second car is.

Asked by arpita 28th September 2014, 9:15 AM
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CBSE - IX - Physics - Motion

Two racing cars of masses m1 and m2 are moving in circles of radii r1 and r2 respectively.
Their speeds are such that each makes a complete circle in the same length of time t.Find the ratio of angular speed of the first car to that of the second car is.

Asked by arpita 28th September 2014, 9:15 AM
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CBSE - IX - Physics - Motion

What do you mean by angular velocity ?

Asked by vivanyagniksetia 11th September 2014, 1:08 PM
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CBSE - IX - Physics - Motion

what is velocity and what is magnitude ?

Asked by soni.nadia80 27th August 2014, 5:28 PM
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CBSE - IX - Physics - Motion

a boy on a78.4m high cliff drops a stone.one second later he throws another stone downwards with some speed.the two stones reach the ground simultuneously find the speed with which the secondstone was thrown

Asked by Vaishnavi Sharma 22nd August 2014, 7:59 PM
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CBSE - IX - Physics - Motion

Write one main difference between speed and velocity.

Asked by Topperlearning User 23rd July 2014, 7:22 AM
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CBSE - IX - Physics - Motion

Under what condition(s) is the magnitude of average velocity of an object equal to its average speed.

Asked by Topperlearning User 23rd July 2014, 7:20 AM
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CBSE - IX - Physics - Motion

A satellite is moving in circular orbit of radius 42250 km. Calculate its speed if it takes 24 hour to revolve around the earth.

Asked by Ayan 26th June 2014, 8:06 PM
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CBSE - IX - Physics - Motion

On a 1473625.736743 km track a train travels the first 4368.36466 km with speed of 27374.163747 km per 12.34 min. calculate the speed for the rest of the track to make average speed 273747.26454 km per sec. 
 

Asked by jeel katira 21st June 2014, 9:48 PM
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CBSE - IX - Physics - Motion

What is the velocity of the object for which displacement is directly proportional to time?

Asked by abhinavkumar281 2nd June 2014, 10:04 AM
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CBSE - IX - Physics - Motion

A train travels at a speed of 60Km.hr for 0.52h , at 30 Km/r for the next 0.24h and then at 70km.h for the next 0.71hour. what is the average speed of the train

Asked by chaitra k k 23rd May 2014, 10:35 PM
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CBSE - IX - Physics - Motion

the minute hand of a clock is 7 cm. long . calculate the distance covered and the displacement of minute hand of the clock from 9.00 am to 9.30am

Asked by chaitra k k 23rd May 2014, 10:33 PM
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CBSE - IX - Physics - Motion

What is the quantity which is measured by the area occupied below the velocity-time graph?

Asked by Topperlearning User 13th May 2014, 12:56 PM
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CBSE - IX - Physics - Motion

What can you say about the motion of an object whose distance-time graph is a straight line parallel to the time axis?

Asked by Topperlearning User 13th May 2014, 12:54 PM
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CBSE - IX - Physics - Motion

On a 120 km track, a train travels the first 30 km at a uniform speed of 30 km/h. Calculate the speed with which the train should move on the rest of the track so as to get the average speed of 60 km/h for the entire trip.

Asked by Topperlearning User 13th May 2014, 12:44 PM
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CBSE - IX - Physics - Motion

Speed is a scalar quantity whereas velocity is a vector quantity. Thus, state one  difference between the two quantities important for distinguishing between speed-time graphs and velocity-time graphs.  

Asked by Topperlearning User 13th May 2014, 12:05 PM
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CBSE - IX - Physics - Motion

A runner runs 1.0 km south, then 2.0 km east, then 1.0 km north, and then 2.0 km west to return to its starting point. This trip takes 50 minutes. What was the runner's average speed, and what was the runner's average velocity?

Asked by Topperlearning User 8th April 2014, 8:30 AM
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CBSE - IX - Physics - Motion

Convert 1 km/h to m/s.

Asked by Topperlearning User 8th April 2014, 8:21 AM
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CBSE - IX - Physics - Motion

 Define the following terms: (a) speed (b) velocity (c) uniform velocity (d) non uniform velocity

Asked by Topperlearning User 8th April 2014, 8:20 AM
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CBSE - IX - Physics - Motion

what are the differences between speed and velocity.

Asked by Topperlearning User 8th April 2014, 8:16 AM
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CBSE - IX - Physics - Motion

 What can you say about the motion of an object if its speed-time graph is a straight line parallel to the time axis?

Asked by Topperlearning User 8th April 2014, 7:52 AM
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CBSE - IX - Physics - Motion

What is the nature of the distance-time graphs for uniform and non-uniform motion of an object?

Asked by Topperlearning User 8th April 2014, 7:50 AM
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