Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

A bus covers a distance of 30 km during first hour of its motion, 40 km during the second hour of its motion and 26 km during third hour of its motion. Calculate the acerage speed and velocity.
Asked by harjot.arshleen | 20 Feb, 2021, 14:14: PM
answered-by-expert Expert Answer
average speed = distance / time
 
distance = ( 30 + 40 + 26 ) km = 96 km
 
time = 3 hr
 
average speed = 96 km/3 hr = 32 km/hr
 
average velocity = displacement / time
 
From the given information, the motion appears in straight line without changing any direction .
 
hence displacement and distance are equal
 
Hence average velocity = 32 km/hr
Answered by Thiyagarajan K | 20 Feb, 2021, 15:06: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 9 - Physics
why the pin sink and ship float?
Asked by nsandhyabati | 11 Jul, 2024, 21:41: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
an athlete complete one round of a circular track of diameter 200 m is 40 second what will be the distance covered and the displacement at the end of 2 minute and 20 second
Asked by mintinmaurya | 25 Jun, 2024, 15:03: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
motion lesson
Asked by kamakshi.tulasi | 10 Jun, 2024, 09:59: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
what is meant by displacement
Asked by nittavijayalaxmigayatri | 08 Jun, 2024, 12:36: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
A bus starts from waste moves with the uniform acceleration of 1 m/s² for 5 minutes then what will be the speed acquired and the distance travelled by the bus.
Asked by varshuparekh | 03 Jun, 2024, 18:34: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
car increases its velocity from 20 m per second to 40 m per second in 10 second find its acceleration?
Asked by ashishtyagi642 | 17 May, 2024, 06:34: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
An object of mass 1kg is falling from the height h=10m.calculate a) the total energy of an object at h=10m b) potential energy of the object when it is at h=4m c) kinetic energy of the object when it is at h=4m d) what will be the speed of the object when it hits the ground
Asked by mailtoparvathyprajith | 08 Feb, 2024, 18:45: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
1)state energy conversion takes place in hydroelectric power plants? 2)an object of mass 1kg is falling from a height of 10 m. Calculate i) the total energy of object at h=10m ii) Potential energy of an object when h=4m   3)Name energy transfers which occurs when a)an electri bell rings b)someone speake into a microphone c)there is a picture on television screen d)A torch is on  
Asked by mailtoparvathyprajith | 08 Feb, 2024, 12:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
Why do we feel light on our feet when standing in a swimming pool with water up to our armpits ?
Asked by mailtoparvathyprajith | 08 Feb, 2024, 12:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
The average speed of a moving body can never be zero but the average velocity of a moving body can be zero. Justify.
Asked by mailtoparvathyprajith | 06 Feb, 2024, 21:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Are You a Teacher or a Parent Seeking Customised Tests? Click here
×