Motion Worksheet-3

Motion Worksheet-3

1. If a body starts from rest, its initial velocity a is :

A. Zero

B. equal to its final velocity

C. not equal to its final velocity

D. None of these

2. The unit of velocity is _____.

A. m/s                B. m/s^–2             C. km/hr            D. radians/seconds

3. ______ cannot be zero for a moving body.

A. Velocity                                      B. Speed

C. Acceleration                             D. time taken

E. Displacement

4. a= = (v–u)/t, can  also be written as ;

A. v = u + at                                   B. at = v + u

C. at = v – u                                   D. v = u - at

E. u = v + at

5. 1m/s= ____ km/hr

A. 18/5                                            B. 1000/3600

C. 3600/1000                               D. 5/18

6. A truck moving on a straight road possesses ____ motion.

A. Translatory                               B. Rectilinear

C. Linear                                        D. Oscillatory

E. Rotatory

7. The branch of Physics, which deals with the behaviour of moving objects, is known as ____

A. Optics                                         B. Kinematics

C. Statistics                                    D. mechanics

E. Astronomy

8. When a body is moving with the effect of gravitational force, then its

A. acceleration may be treated constant.

B. velocity may be constant.

C. acceleration is always constant.

D. a freely falling body.

E. velocity is always constant.

9. Equations of motion can be derived by

A. graphical method                    B. algebric method

C. calculus method                      D. geometrical method

10. The force of _____ keeps the motion in the circular orbit.

A. centripital force                       B. gravtational force

C. magnetic force                         D. centrifugal force

11. Acceleration is positive when the body gains ______.

A. Momentum                               B. Velocity

C. Speed                                         D. mass

E. Distance

12. For a freely falling body;

A. v = √2gh       B. V = 0              C. U = 0             D. u = √2gh

Answer:

1. A,C

2. A,C

3. B,D

4. A,C,E

5. A,C

6. A,B,C

7. B,D

8. C,D

9. A,B

10. A,B

11. A,B

12. A,C