CBSE - Motion

1 Motion  A body freely falling from rest has a velocity v after it falls through a height h. The distance it has to fall further for its velocity to become double is -

(1)  3 h
(2)  6 h
(3)  8 h
(4)  10 h

2 Motion For a body performing motion with uniform speed, the distance-time graph is:

(1) Straight line parallel to y-axis
(2) Straight line inclined to the time axis
(3) Straight line parallel to x-axis
(4) Curved line

3 Motion A boy throws a ball up and catches it when the ball falls back. In which part of the motion the ball is accelerating?
(1) During downward motion
(2) When the ball comes to rest
(3) During upward motion
(4) When the boy catches the ball

4 Motion The velocity-time graph AC of a moving particle is shown in the figure below. The acceleration of the particle is:

(1) 5 m/s²
(2) 10 m/s²
(3) 20 m/s²
(4) 2.5 m/s²

5 Motion A body starts to slide over a horizontal surface with an initial velocity of 0.2 m/s. Due to friction, its velocity decreases at the rate of 0.02 m/s². How much time will it take for the body to stop?
 (1) 10 s
 (2) 15s
 (3) 1s
 (4)  5s

6 Motion What is the position of the body in the time interval 60-70 seconds?

(1) 15 m
(2) 5 m
(3) 10 m
(4) 20 m

7 Motion Distance-time graph of two objects A and B are shown below.

(1) Which statement is true for the speed of object A and B ?
(2) Speed of object A is greater than object B
Speed of object A is smaller than object B
(3) Both have same speed
(4) Speed of Object A is double the speed of object B.

8 Motion Which of the following figures represent uniform motion of a moving object correctly?


ans 1


3. In a distance-time graph, if the line is horizontal, then the object is:
(1) Accelerating
(2) Speeding up
(3) At rest
(4)  Slowing down

9 Motion A body falling from rest describes distances S1, S2 and S3 is the first, second and third seconds of
its fall. Then the ratio of S1:S2:S3 is :
(1) 1 : 1 : 1
(2) 1 : 3 : 5
(3) 1 : 2 : 3
(4) 1 : 4 : 9

10 Motion Which sentence best describes the athlete whose distance-time graph is shown below?

(1) The athlete ran forward for 3 seconds, and then he ran backward for 3 more seconds.
(2) The athlete ran forward for 3 seconds, and then he stood still for 3 more seconds.
(3) The athlete ran forward for 3 seconds, and then he ran forward for 3 more seconds but with a lower speed.
(4) The athlete ran forward for 3 seconds, and then he moved forward for 3 more seconds with a greater speed.