CBSE - Motion

1 Motion What is true about scalar quantities ?

(1)  Scalars quantities have direction also.
(2)  Scalars can be added arithmetically.
(3)  There are special laws for scalar addition.
(4)  Scalars have special method to represent.

2 Motion The equations of motion can be derived by using:
 (1) Distance– time graph
 (2 Velocity – time graph for non-uniform acceleration
 (3) Displacement time graph
 (4) Velocity – time graph for uniform acceleration

3 Motion A body starts from rest at time t = 0, the acceleration time graph is shown in figure. The maximum velocity attained by the body will be :

(1) 110 m/s
(2) 55 m/s
(3) 650 m/s
(4) 550 m/s

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 

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

6 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

7 Motion The velocity time graph of runner is given in the graph. What is the total distance covered by the runner in 16s?

(1) 100 m
(2) 70 m
(3) 30 m
(4) 130 m

8 Motion For the velocity time graph shown in figure,

the distance covered by the body in the last two seconds of its motion is what fraction of the total distance covered in all the seven seconds ?

(1)  1/2
(2)  1/4
(3)  1/3
(4)  2/3

9 Motion The speed-time graph for a particle moving at constant speed is a straight-line ________ to the time axis.

(1) perpendicular
(2) parallel
(3) inclined
(4) aligned

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