Physics
From the velocity-time graph, we can determine :
- The displacement of the body in a certain time interval.
- The acceleration of the body at any instance.
- Both (a) and (b)
- None of these
Answer
Both (a) and (b)
Reason — (i) Since, velocity x time = displacement, the area enclosed between the velocity-time sketch and X-axis (i.e., the time axis) gives the displacement of the body.
(ii) Since, acceleration is equal to the ratio of change in velocity and time taken, therefore the slope (or gradient) of the velocity-time sketch gives the acceleration.
Related Questions
Out of the following, the correct displacement-time graph for uniform motion is:
The velocity-time graph of a body in motion is a straight line inclined to the time axis. The correct statement is —
- velocity is uniform
- acceleration is uniform
- both velocity and acceleration are uniform
- neither velocity nor acceleration is uniform.
Velocity x time = :
- Average velocity
- Displacement
- Acceleration
- Speed
From the given displacement-time graph, answer the following questions:
(i) The kind of motion depicted in this graph is :
- uniform
- non-uniform
- retardation
- all of the above
(ii) The velocity between point A and C is:
- 20 ms-1
- 5 ms-1
- 10 ms-1
- 15 ms-1
(iii) The displacement at t = 3s is:
- 15 m/s2
- 12.5 m/s2
- 40 m
- 30 m