# Motion Worksheet-12

Motion Worksheet-12

1. Have you watched the night sky? You have observed that the position of stars and planets change while you remain stationary. In reality:

A. only stars and planets are moving

B. stars, planets and  the earth also moving

C. only earth is moving

D. No one is moving.its due to some other reason

1. Displacement is:

A. shortest distance covered by an object

B. longest distance covered by an object

C. any change in position

D. None of these

1. Find the correct statement from below:

A. Displacement is scalar and Distance is vector

B. Displacement is vector and Distance is scalar

C. Both are scalar

D. Both are vector

1. Speed is :

A.

B.

C. Both &

D. None of these

1. Let an object moving with an initial velocity 'u' attain final velocity 'v' in time 't' then acceleration produced in the object is :

A.               B.

C. v/T                                              D. all of these

1. Result that can be deduced from velocity-time graph is:

A. The acceleration produced in the body

B. The distance covered by a moving object

C. We can not derive the equations of motion

D. Both The acceleration produced in the body and The distance covered by a moving object

1. Which statement is correct :

(1) First equation of motion gives velocity acquired by a body in time t.

(2) Second equation of motion gives the velocity acquired by a body in traveling a distance s.

(3) Third equation of motion gives the distance travelled by a body in time ‘t’.

A. (1) & (2)        B. (2) & (3)        C. (1) only          D. (2) only

1. When a body moves in a circular path with uniform speed (constant speed), its motion is:

A. Uniform  motion

B. Non-uniform motion

C. Non-uniform circular motion

D. Uniform circular motion

1. A scooterist covers a distance of 3 kilometers in 5 minutes. Calculate his speed in:

(1)  centimetres per second (cm/s)

(2)  metres per second (m/s)

A. (1) 600 cm/s, (2) 60 m/s

B. (1) 6000 cm/s, (2) 600 m/s

C. (1) 1000 cm/s, (2) 10 m/s

D. (1) 10 cm/s, (2) 1000 m/s

1. A car travels 30 km at a uniform speed of 40 km/h and the next 30 km at a uniform speed of 20 km/h. Find its average speed.

A. 26.6 km/hour                          B. 26.6 m/s

C. 2.66 km/hour                          D. 2.66 m/s

1. B

2. A

3. B

4. A

5. D

6. D

7. C

8. D

9. C

10. A