CBSE - Motion

1 Motion On the distance-time graph, the Y-axis should be labelled as:
(1) Distance
(2) Displacement
(3) Speed
(4) Time

2 Motion A body of mass 2 kg is free to move along x-axis. It is at rest at t = 0. From t = 0 onwards it is subjected to a time dependent force F(t ) in x-direction. The variation of F with time is as shown :



The change in momentum during journey is (in N-s) :
(1) 4.50
(2) 7.50
(3) 5.06
(4) 14.06

3 Motion A body is dropped from certain height from a uniformly ascending balloon. The correct graph showing variation of velocity with time for body is :

4 Motion A boy is running along a circular track of radius 7 m. He completes one circle in 10 second. The average velocity of the boy is -

(1)  4.4 ms^–1
(2)  0.7 ms^–1
(3)  Zero
(4)  70 ms^–1

5 Motion How many meters is equal to 1 nanometer?
(1) 10^–9 meter
(2) 10^–10 meter
(3) 10 ⁹ meter
(4) 10¹⁰ meter

6 Motion Area under a v – t graph represents a physical quantity which has the unit:
(1) m²
(2) m / s
(3) m / s²
(4) m

7 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

8 Motion The following position-time graph of an object shows that the body

(1) No such inference can be made from the graph.
(2) Has non-uniform motion.
(3) Has uniform motion.
(4) Is at rest.

9 Motion The displacement-time graph for a body is given below. State whether the velocity and acceleration of the body in the region DE are positive , negative or Zero.

(1) V= +v e but a=0
(2) V = -ve and a = -ve
(3) V = + ve and a = + ve
(4) V = +ve and a = -ve

10 Motion The area under the speed-time graph gives the ________.
(1) velocity
(2) distance
(3) acceleration
(4) time