Home
Class 9
PHYSICS
An object is sliding down an inclined p...

An object is sliding down an inclined plane. The velocity changes at a constant rate from 10 cm/s to 15 cm/s in two seconds. What is its acceleration ?

A

` 10 cm// s^(2)`

B

` 2 . 9 cm // s^(2)`

C

` 2 . 5 cm // s^(2)`

D

` 40 cm // s^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
The situation is shown in figure. Let us take BA as the positive direction. The velocity at t = 0 is u = + 10 cm/s and that at t = 2 s is v = + 15 cm/s Thus,
` a = ( v - u)/( t) = (15 - 10)/( 2s) = 2.5 cm//s^(2)`
Promotional Banner

Topper's Solved these Questions

  • FOOTSTEPS TOWARDS JEE MAIN

    MTG IIT JEE FOUNDATION|Exercise Section B (Numerical Value Type Questions)|10 Videos

  • FOOTSTEPS TOWARDS CBSE BOARD

    MTG IIT JEE FOUNDATION|Exercise Section - D |14 Videos

Similar Questions

Explore conceptually related problems

The velocity of an object changes from 50 m/s to 60 m/s in 20 seconds. What is the average acceleration of the object over that interval?

The angular velocity of a flywheel change from 6 rad s^(-1) to 18 rad s^(-1) in 6 seconds. Calculate its angular acceleration.

A particle is moving with velocity 5 m/s towards cast and its velocity changes to 5 m/s north in 10 s, find the acceleration .

Find the acceleration of the car, if it changes its velocity from 20 m s^(-1) to 30 ms^(-1) in 5 seconds.

A ball of radius R=10.0cm rolls without slipping down an inclined plane so that its centre moves with constant acceleration w=2.50cm//s^2 , t=2.00s after the beginning of motion its position corresponds to that shown in figure. Find: (a) the velocities of the points A, B, and O, (b) the accelerations of these points.