CBSE - Motion

1 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 :

2 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 ?

3 Motion The correct velocity-time graph for zero acceleration is:

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

4 Motion The area under a velocity-time graph is represented by the unit:
(1) m
(2) m^-1
(3) m³
(4) m²

5 Motion What is the slope of distance-time graph when object is at rest?
(1) Decreases continuously
(2) Zero
(3) Increases continuously
(4) One

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 

The figure above shows distance-time graphs of two objects X and Y. Which object is mov ing
with greater speed?

(1) Both objects are at rest
(2) Both objects are moving with same speed
(3) Object Y
(4) Object X

8 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

9 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

10 Motion A body is moving with uniform velocity of 10 ms^–1  The velocity of the body after 10 s is -

(1)  100 ms^–1
(2)  50 ms^–1
(3)  10 ms^–1
(4)  5 ms^–1