CBSE - Motion

1 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

2 Motion A quantity has a value of -16 m/s² . It is be the :
(1) Acceleration of an object.
(2) Retardation of an object.
(3) Velocity of an object.
(4) Speed of an object.

3 Motion The velocity-time graph of a body moving in a straight line is shown in figure. The displacement and distance travelled by the body in 6 second are respectively-

(1)  8m , 16m
(2)  16m, 8m
(3)  16m, 16m
(4)  8m, 8m

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

5 Motion Velocity-time graph AB (Figure) shows that the body has-

(1)  A uniform acceleration
(2)  A non uniform retardation
(3)  Uniform speed
(4)  Initial velocity OA and is moving with uniform retardation

7 Motion 
Which motion does the graph of distance and time shows for accelerated motion?
(1) Non-uniformly accelerated
(2) Constant accelerated
(3) Uniformly accelerated
(4) Uniformly retarded motion

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

9 Motion 

In the distance-time graph of a cyclist, what is happening between B-C and C-D?

(1) B-C: cyclist is coming back to where he started, C-D: cyclist is stationary.
(2) B-C: cyclist is stationary, C-D: cyclist is accelerating.
(3) cyclist is stationary, C-D- speed is increasing
(4) B-C: cyclist is stationary, C-D: cyclist is coming back to where he started.

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