CBSE - Motion

1 Motion For a constant acceleration, the nature of velocity-time graph is:


(1) Graph-B
(2) Graph-D
(3) Graph-C
(4) Graph-A

2 Motion If you whirl a stone on the end of the string and the string suddenly breaks, the stone will:
  (1) Fly off along the tangent to its circular path.
  (2) Fly directly towards you.
 (3) Spiral away from your hand.
 (4) Spiral in towards your hand.

3 Motion 

The acce le ration of the above velocity-time graph is:
(1) Non-uniform.
(2) Zero.
(3) One.
(4) Uniform.

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 The acceleration of an object moving in a straight line can be determined from:
(1) The area between the distance-time graph and time axis.
(2) The area between the velocity-time graph and time axis
(3) The slope of the velocity-time graph.
(4) The slope of the distance-time graph.

6 Motion The displacement covered by a seconds’ hand of radius r in a clock after one revolution is:
(1) 360 degree
(2) zero
(3) 3r
(4) 2r

7 Motion A stone is dropped from the top of a tower. Its velocity after it has fallen 20 m is (take g = 10m/s²)
(1) –10 m/s (2) 10 m/s (3) – 20 m/s (4) 20 m/s

8 Motion The velocity time graph of two bodie s A and B traveling along the +x direction are given in
the figure . Which body has a greater acceleration?

(1) Body A has a greater acceleration
(2) Body B has a greater acceleration
(3) Both A and B have same acceleration
(4) Acceleration cannot be predicted from the given graph

9 Motion What is the speed of the object in the 10 second interv al from 40-50 seconds?

(1) 2 m/s
(2) 1 m/s
(3) 0.25 m/s
(4) 0.5 m/s

10 Motion A body is moving along a straight line at 20 ms^–1 undergoes an acceleration of 4 ms After 2 s, its speed will be-

(1)  8 ms^–1
(2)  12 ms^–1
(3)  16 ms^–1
(4)  28 ms^–1