Ask a Doubt
Request a call back

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

CBSE Class 9 Answered

Answer the following using the given velocity-time graph:  (a) During which part of the journey was the car moving fastest? (b) During which part of the journey did the car has greatest acceleration? (c) Calculate the acceleration between the points D and E.
Asked by Topperlearning User | 18 May, 2015, 01:04: PM
answered-by-expert Expert Answer

begin mathsize 12px style left parenthesis straight a right parenthesis space Between space straight A space and space straight B space the space car space was space moving space at space its space fastest space speed colon space 20 space straight m divided by straight s. space space left parenthesis straight b right parenthesis space The space acceleration space is space greatest space between space straight O space and space straight A space since space the space slope space of space graph space is space largest space there. space space left parenthesis straight c right parenthesis space Acceleration space between space straight D space and space straight E equals fraction numerator Change space in space speed over denominator Time space taken end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals fraction numerator 10 space straight m divided by straight s over denominator 10 space straight s end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 1 space straight m divided by straight s squared end style

Answered by | 18 May, 2015, 03:04: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 9 - Physics
Time- 0 10 20 30 40 50 Speed- 5 10 15 20 25 30 Find the distance travelled in 50 seconds
Asked by akshatdhamija1409 | 15 Jul, 2022, 11:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
Starting from rest, an object is uniformly accelerated to a speed of 60m/s in 20s. The object travels with this speed for next 40s and is then brought to rest by a uniform retardation in the next 30s.Sketch velocity time graph and calculate the acceleration, retardation and the total distance travelled. Hint: acceleration =rate of change of velocity.  distance covered =area under velocity-time graph .
Asked by chaitanyas5425 | 10 Nov, 2021, 09:16: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
what is velocity time graph
Asked by akakhilesh15597 | 16 Sep, 2021, 08:37: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
  What information can you get from velocity time graph of an object’s motion? Write three points at least. 
Asked by jasmine09.05.2007 | 10 Jul, 2021, 07:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
Please solve the given question
question image
Asked by ak7829426179 | 24 Sep, 2020, 08:05: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
What is accerlated motion??
Asked by himani.299 | 28 Aug, 2020, 12:06: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
A car is moving with a velocity of 7m per second it's velocity decreasing at the rate of 2.5 metre per second s square. What
Asked by dishasarma2016 | 04 Jul, 2020, 09:15: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
A racing car starts from rest and has uniform acceleiation of 5m/sec ^2.If it travels for 20sec  ,find the final velocity at this instant  
question image
Asked by jsrashokkumar1978 | 30 May, 2020, 12:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
The velocity-time graph (v-t) of a car moving along a level road is shown below.Find the average speed of the car in the time interval 0 to 8 s.
question image
Asked by Santosh.kumar0317 | 25 Aug, 2019, 02:15: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
Draw v-t with the data given below and answer the questions below velocity (m/s) 0 10 20 30 20 10 0 time (s) 0 5 10 15 20 25 30 1. Calculate the acceleration during 0 to 15 seconds  2.calculate the acceleration during last 15 seconds    3. Calculate the total distance travelled by the object   
Asked by Anushivashv2 | 23 Jul, 2018, 04:37: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×