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600
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1. The rate of motion of an object is measured by
A. Distance
B. Displacement
C. Speed
D. Acceleration
2. Speed is defined as
A. Distance travelled per unit time
B. Displacement per unit time
C. Force per unit time
D. Energy per unit distance
3. The SI unit of speed is
A. km/h
B. m/s
C. m²/s
D. km/s²
4. A car covers 100 km in 2 hours.Its average speed is
A. 25 km/h
B. 40 km/h
C. 50 km/h
D. 75 km/h
6. Speed with direction is known as
A. Acceleration
B. Displacement
C. Velocity
D. Force
7. The SI unit of velocity is
A. m/s
B. m/s²
C. km/h²
D. m²/s
8. The speed of an object need not be constant because
A. Time changes
B. Distance changes
C. It can have non-uniform motion
D. It remains zero
9. Average speed is calculated by
A. Total displacement ÷ Total time
B. Total distance ÷ Total time
C. Total velocity ÷ Total time
D. Total force ÷ Total distance
10. A car’s odometer measures
A. Speed
B. Distance travelled
C. Acceleration
D. Velocity
11. The average velocity of an object can be zero even if its average speed is not zero when
A. It moves uniformly
B. It returns to its starting point
C. It moves only in one direction
D. Its time is zero
13. If an object travels 400 km in 8 hours, its average speed is
A. 25 km/h
B. 40 km/h
C. 50 km/h
D. 60 km/h
14. To find velocity, we need
A. Distance and time
B. Displacement and time
C. Force and mass
D. Energy and time
15. Speed and velocity differ because
A. Velocity has direction, speed doesn’t
B. Speed has direction, velocity doesn’t
C. Both are scalar quantities
D. Both are vector quantities
16. The arithmetic mean of initial and final velocity gives
A. Instantaneous speed
B. Average speed
C. Average velocity (uniform acceleration)
D. Acceleration
17. When velocity is constant, then
A. Speed changes
B. Acceleration is zero
C. Time decreases
D. Displacement becomes zero
18. The formula to convert 50 km/h into m/s is
A. 50 × 5/18
B. 50 × 18/5
C. 50 ÷ 18
D. 50 ÷ 36
19. A cyclist moving in a straight line doubles his speed.His velocity
A. Remains same
B. Becomes half
C. Doubles
D. Becomes zero
20. The quantity that tells both how fast and in which direction an object moves is
A. Speed
B. Displacement
C. Velocity
D. Acceleration
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