Which of the following velocity-time graphs shows a realistic situation for a body in motion?
1. | 2. | ||
3. | 4. |
Acceleration-time graph of a body is shown.
The corresponding velocity-time graph of the same body is:
1. | 2. | ||
3. | 4. |
Given below are two statements:
Assertion (A): | Position-time graph of a stationary object is a straight line parallel to the time axis. |
Reason (R): | For a stationary object, the position does not change with time. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
The acceleration of a particle starting from rest varies with time according to the relation A = – aω2sinωt. The displacement of this particle at a time t will be:
1.
2.
3.
4.
Four marbles are dropped from the top of a tower one after the other at a one-second interval. The first one reaches the ground after 4 seconds. When the first one reaches the ground the distances between the first and second, the second and third, and the third and fourth will be, respectively:
1. | 35 m, 25 m, and 15 m | 2. | 30 m, 20 m, and 10 m |
3. | 20 m, 10 m, and 5 m | 4. | 40 m, 30 m, and 20 m |
A particle is projected upwards. The times corresponding to height h while ascending and while descending are t1 and t2 respectively. The velocity of projection will be:
1. gt1
2. gt2
3.
4.
Which graph represents a uniformly accelerated motion?
1. | 2. | ||
3. | 4. |
In the following graph, the distance travelled by the body in metres is:
1. | \(200\) | 2. | \(250\) |
3. | \(300\) | 4. | \(400\) |
The velocity-time graph of a body moving in a straight line is shown in the figure. The displacement and distance travelled by the body in 6 seconds are, respectively, :
1. 8 m, 16 m
2. 16 m, 8 m
3. 16 m, 16 m
4. 8 m, 8 m
A lift is going up. The variation in the speed of the lift is as given in the graph. What is the height to which the lift takes the passengers?
1. | 3.6 m |
2. | 28.8 m |
3. | 36.0 m |
4. | Cannot be calculated from the above graph |