CBSE - Motion

2 Motion If the velocity-time graph of an object is not a straight line , then its acceleration is:
(1) Variable
(2) Positive
(3) Zero
(4) Negative

3 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

4 Motion The ratio of the heights from which two bodies are dropped is 3:5 respectively. The ratio of their final velocities is:
 (1) 9 : 25
 (2) √ 3 : √ 5
 (3) 5 : 3
 (4) √5 : √3

5 Motion 

A ball is thrown vertically upwards. Which of the following plot represents the velocity time graph of the ball during its flight, if the air resistance is not ignored ?

6 Motion A body of mass 2 kg is moving on a smooth floor in straight line with a uniform velocity of 10 m/s. Resultant force acting on the body is -


(1) 20 N
(2) 10 N
(3) 2 N
(4) zero

7 Motion Area between speed-time graph and time axis gives-

(1)  Distance
(2)  Velocity
(3)  Speed
(4)  None of these

8 Motion The distance-time graph below shows that an object is moving with:

(1) Uniform acceleration
(2) Non-uniform speed
(3) Uniform speed
(4) Zero speed, that is at rest

9 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

10 Motion If car A is at 40 km/h and car B is at 10 km/h in the opposite direction, what is the velocity of the car A relative to the car B?
(1) 20 km/h
(2) 50 km/h
(3) 10 km/h
(4) 40 km/h