Advertisements
Advertisements
Question
What does a positive acceleration mean?
Advertisements
Solution
Positive acceleration corresponds to situation when velocity is continuously increasing with respect to the time.
APPEARS IN
RELATED QUESTIONS
Define acceleration. State its unit.
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.
(a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason .
(b) Compare the magnitude of acceleration and retardation .
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity and variable acceleration.
What is the SI unit of acceleration?
Is it possible for an accelerating body to have constant speed?
The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Acceleration.
The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Deceleration
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:
Distance travelled
Correct your friend who says that acceleration gives the idea of how fast the position changes.
A boy throws a ball up and catches it when the ball falls back. In which part of the motion the ball is accelerating?
