Advertisements
Advertisements
Question
A car accelerates to a velocity of 30 m/s in 10 s and then decelerates for 20 s so that it stops. Draw a velocity-time graph to represent the motion and find:
The acceleration.
Advertisements
Solution

Acceleration a= (v - u)/t= (30 - 0)/ 10 = 3 ms-2
APPEARS IN
RELATED QUESTIONS
What is meant by the term retardation? Name its S.I. unit.
A racing car is moving with a velocity of 50 m/s. On
applying brakes, it is uniformly retarded and comes to rest in 20 seconds. Calculate its acceleration.
From the velocity – time graph given below, calculate deceleration in region BC.

The acceleration of a moving body is constant in magnitude and direction. Must the path of the body be a straight line?
If not, given an example.
What does a positive acceleration mean?
The initial velocity of a car is 10 ms-1. It moves with an acceleration of 2 ms-2. What will be its speed after 10 seconds?
State if the following situation is possible:
A body moving horizontally with an acceleration in vertical direction.
From the given v-t graph it can be inferred that an object is

When an object undergoes acceleration ______.
If a body starts from rest, what can be said about the acceleration of the body?
