CBSE - Motion

1 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

2 Motion Which of the following figures represent uniform motion of a moving object correctly?


ans 1


3. In a distance-time graph, if the line is horizontal, then the object is:
(1) Accelerating
(2) Speeding up
(3) At rest
(4)  Slowing down

3 Motion An athlete complete one round of a circular track of diameter 200 m in 40 s. What will be the displacement at the end of 2 minutes 40 s. ?

(1)  2200 m
(2)  220 m
(3)  22 m
(4)  Zero

4 Motion 40 A body starts falling from height 'h' and travels distance h/2 during the last second of motion. The time of travel (in sec.) is-
(1) √ 2 -1
(2) 2 + √2
(3) √2+ √3
(4) √3 +2

5 Motion A body of mass 2 kg is free to move along x-axis. It is at rest at t = 0. From t = 0 onwards it is subjected to a time dependent force F(t ) in x-direction. The variation of F with time is as shown :



The change in momentum during journey is (in N-s) :
(1) 4.50
(2) 7.50
(3) 5.06
(4) 14.06

6 Motion A stone is dropped from the top of a tower. Its velocity after it has fallen 20 m is (take g = 10m/s²)
(1) –10 m/s (2) 10 m/s (3) – 20 m/s (4) 20 m/s

7 Motion The area enclosed by velocity-time graph and the time axis will be equal to the magnitude of
(1) displacement
(2) speed
(3) acceleration
(4) distance

8 Motion A body falling from rest describes distances S1, S2 and S3 is the first, second and third seconds of
its fall. Then the ratio of S1:S2:S3 is :
(1) 1 : 1 : 1
(2) 1 : 3 : 5
(3) 1 : 2 : 3
(4) 1 : 4 : 9

9 Motion The brakes applied to a car produce a negative acceleration of 6ms^–2  If the car stops after 2 seconds, the initial velocity of the car is -

(1)  6 ms^–1
(2)  12 ms^–1
(3)  24 ms^–1
(4)  Zero

10 Motion The slope of the distance-time graph is:

(1) Distance
(2) acceleration
(3) Speed
(4) Displacement