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1. Newton’s Second Law relates the force acting on a body to its:
A. Mass and velocity
B. Mass and acceleration
C. Speed and distance
D. Weight and height
2. The rate of change of momentum of an object is proportional to the:
A. Applied unbalanced force
B. Balanced force
C. Gravitational pull
D. Centripetal force
3. The momentum of an object depends on:
A. Only mass
B. Only velocity
C. Both mass and velocity
D. Only time
4. The SI unit of momentum is:
A. Joule
B. kg m/s
C. Newton
D. Watt
5. A greater force produces:
A. Smaller acceleration
B. Greater acceleration
C. No change in acceleration
D. Constant velocity
6. The relationship between force, mass, and acceleration is given by:
A. F = ma
B. F = m/a
C. F = a/m
D. F = m + a
7. The unit of force is named after:
A. Galileo
B. Archimedes
C. Newton
D. Einstein
8. One newton is the force that produces an acceleration of:
A. 1 m/s on 1 kg mass
B. 1 m/s² on 1 kg mass
C. 10 m/s² on 1 kg mass
D. 1 m/s² on 10 kg mass
9. When the same force is applied to two objects of different masses, the smaller mass will:
A. Accelerate less
B. Accelerate more
C. Not move
D. Move uniformly
10. A fast-moving cricket ball hurts more than a slow ball because:
A. It has higher velocity and momentum
B. It has less energy
C. It has less mass
D. It produces less force
11. Pulling back the hands while catching a ball helps because:
A. It increases the speed of the ball
B. It increases the time of impact and reduces force
C. It decreases the time of impact
D. It increases the rate of change of momentum
12. The change in momentum of an object depends on:
A. Time and force applied
B. Only time
C. Only velocity
D. Only acceleration
13. The unit newton is equal to:
A. 1 kg·m/s
B. 1 kg·m/s²
C. 1 kg/s²
D. 1 m/s²
14. If a car of 1000 kg slows from 30 m/s to rest in 4 s, the force on it is:
A. 2500 N
B. –7500 N
C. 500 N
D. –10000 N
15. The direction of the force acting on an object is the same as the direction of its:
A. Velocity
B. Momentum change
C. Displacement
D. Rotation
16. A truck requires more force to stop than a car moving at the same speed because:
A. It has more mass and momentum
B. It moves faster
C. It produces less friction
D. It has smaller inertia
17. A small object moving at high speed can have a large impact because:
A. Its weight is high
B. Its momentum is large due to high velocity
C. It moves slowly
D. It has low inertia
18. The momentum of an object increases when:
A. Its velocity increases
B. Its mass decreases
C. Time decreases
D. Force decreases
19. A short time of contact during a collision causes:
A. Smaller force
B. Larger force
C. No force
D. Constant acceleration
20. When an object is acted upon by a constant force, its acceleration is:
A. Zero
B. Uniform
C. Decreasing
D. Irregular
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