Chapter 3 Kinematics - Test 1

1. Dynamics deals with forces and their action on the motion of bodies

1) True
2) False
2. The shortest distance between two points is known as displacement.

1) True
2) False
3. A truck covers a distance of 360 km in 5 hours its speed is 72 km/h

1) False
2) True
4. Speed of a body moving in circle will be uniform.

1) True
2) False
5. When the driver applies brakes its velocity starts decreasing and direction of acceleration will be same to the direction of velocity

1) True
2) False
6. Orbital speed of an electron is 3x102 m/s

1) True
2) False
7. Unit of velocity is S.I in Km/h.

1) True
2) False
8. Displacement is a scalar quantity

1) False
2) True
9. Average speed of lion is 50 Km/h

1) True
2) False
10. When the two cars are traveling in the opposite direction with the velocity of 30 m/s and 20 m/s respectively, their relative velocity will be 50 m/s

1) False
2) True
11. If the speed and direction of a moving body does not change with time then its velocity is said to be uniform.

1) False
2) True
12. When the velocity of motor cycle changes from 10m/s to 20 m/s in 10 seconds then its average acceleration will be 2 m/s2

1) False
2) True
13. Average velocity is the ratio between displacement and time

1) True
2) False
14. When a body is thrown vertically upward then its initial velocity will be zero at the highest points.

1) False
2) True
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