CBSE - Motion

1 Motion 

The speed of the body in the time interval 14 to 18 seconds is
(1) 10 m/s
(2) 0
(3) 12 m/s
(4) 20 m/s

2 Motion When the distance travelled by an object is directly proportional to the time, it is said to travel with-

(1)  zero velocity
(2)  constant speed
(3)  constant acceleration
(4)  uniform velocity

3 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

4 Motion  If the speed-time graph is a straight line parallel to the time axis, then the body is
(1) accelerated motion
(2) in uniform motion
(3) non-uniform acce le rate d motion
(4) at rest

5 Motion Pick the false statement

(1) One can calculate uniform acceleration
(2) One can calculate non uniform acceleration from velocity-time graph.
(3) One can calculate velocity from distance-time graph.
(4) One can calculate speed from distance-time graph.

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

7 Motion  A car travels (1 / 4) ^th of a circle with radius r.  The ratio of the distance to its displacement is-

8 Motion A body is said to be in non-uniform motion if it travels
(1) Equal distance in unequal interval of time
(2) Equal distance in equal interval of time
(3) Unequal distance in unequal interval of time
(4) Unequal distance in equal interval of time

9 Motion The initial velocity of the free falling object is _____________?
(1) More
(2) Less
(3) Zero
(4) 9.8 m/s

10 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