1. Which of the following quantities is a vector?
A) Speed
B) Distance
C) Force
D) Work
Answer: C) Force
2. The force that opposes the motion of objects through air is called:
A) Gravitational force
B) Normal force
C) Frictional force
D) Tension force
Answer: C) Frictional force
3. Newton’s first law of motion is also known as the law of:
A) Inertia
B) Action and reaction
C) Acceleration
D) Force pairs
Answer: A) Inertia
4. An object at rest will remain at rest unless acted upon by an external force. This statement describes which law of motion?
A) Newton’s first law
B) Newton’s second law
C) Newton’s third law
D) None of the above
Answer: A) Newton’s first law
5. The SI unit of force is:
A) Newton
B) Kilogram
C) Joule
D) Watt
Answer: A) Newton
6. When a car makes a sharp turn, passengers feel a force pulling them outward. This force is known as:
A) Centripetal force
B) Centrifugal force
C) Gravitational force
D) Frictional force
Answer: B) Centrifugal force
7. When you push a heavy box across the floor, the force exerted by the box on the floor is an example of:
A) Static friction
B) Kinetic friction
C) Rolling friction
D) Sliding friction
Answer: B) Kinetic friction
8. The tendency of an object to resist changes in its state of motion is called:
A) Momentum
B) Inertia
C) Impulse
D) Velocity
Answer: B) Inertia
9. A ball is thrown vertically upward. At the highest point of its trajectory, its acceleration is:
A) 9.8 m/s² downward
B) 0 m/s²
C) 9.8 m/s² upward
D) Variable
Answer: A) 9.8 m/s² downward
10. The force required to maintain circular motion is directed:
A) Radially outward
B) Radially inward
C) Tangentially
D) Vertically downward
Answer: B) Radially inward
11. The work done by a force is defined as the product of:
A) Force and velocity
B) Force and displacement
C) Mass and acceleration
D) Energy and time
Answer: B) Force and displacement
12. Which of the following is a conservative force?
A) Friction
B) Tension
C) Normal force
D) Gravity
Answer: D) Gravity
13. The rate of change of momentum is equal to:
A) Impulse
B) Force
C) Work
D) Power
Answer: B) Force
14. The vector sum of all forces acting on an object is known as:
A) Net force
B) Tension force
C) Equilibrium force
D) Balanced force
Answer: A) Net force
15. If an object is moving with constant velocity, which statement about the forces acting on it must be true?
A) There are no forces acting on it
B) The net force acting on it is zero
C) The object has maximum kinetic energy
D) The object is in equilibrium
Answer: B) The net force acting on it is zero
16. When an object is in free fall, the only force acting on it is:
A) Gravitational force
B) Normal force
C) Frictional force
D) Tension force
Answer: A) Gravitational force
17. Two objects of different masses are dropped from the same height in a vacuum. Which object will hit the ground first?
A) The heavier object
B) The lighter object
C) Both will hit simultaneously
D) It depends on their shapes
Answer: C) Both will hit simultaneously
18. The force exerted per unit area is known as:
A) Energy
B) Pressure
C) Power
D) Density
Answer: B) Pressure
19. The force required to keep an object moving with constant velocity through a fluid is proportional to the:
A) Density of the fluid
B) Speed of the object
C) Viscosity of the fluid
D) Cross-sectional area of the object
Answer: C) Viscosity of the fluid
20. The force that acts on a body and causes it to move along a circular path is called:
A) Centripetal force
B) Centrifugal force
C) Gravitational force
D) Tension force
Answer: A) Centripetal force
21. The coefficient of restitution is a measure of the:
A) Elasticity of collision
B) Inertia of an object
C) Force of gravity
D) Surface tension of a liquid
Answer: A) Elasticity of collision
22. According to Newton’s second law of motion, the acceleration of an object is directly proportional to the:
A) Force acting on it
B) Mass of the object
C) Velocity of the object
D) Distance traveled by the object
Answer: A) Force acting on it
23. When a force is applied to an object but the object does not move, the force is:
A) Balanced
B) Unbalanced
C) Zero
D) None of the above
Answer: A) Balanced
24. The point at which all the weight of an object appears to act is called its:
A) Center of mass
B) Center of gravity
C) Equilibrium point
D) Tipping point
Answer: B) Center of gravity
25. The work-energy principle states that the work done on an object is equal to the change in its:
A) Velocity
B) Kinetic energy
C) Potential energy
D) Acceleration
Answer: B) Kinetic energy
26. The force of attraction between any two objects in the universe is called:
A) Inertia
B) Gravity
C) Tension
D) Normal force
Answer: B) Gravity
27. A box is pushed horizontally across a floor with a constant velocity. The frictional force acting on the box is:
A) Zero
B) Increasing
C) Decreasing
D) Equal to the applied force
Answer: D) Equal to the applied force
28. Which of the following is an example of projectile motion?
A) A car moving along a straight road
B) A ball thrown into the air
C) A pendulum swinging back and forth
D) A block sliding down a ramp
Answer: B) A ball thrown into the air
29. The force that opposes the relative motion of two surfaces in contact is known as:
A) Static friction
B) Kinetic friction
C) Rolling friction
D) Fluid friction
Answer: B) Kinetic friction
30. An elevator is moving upward with constant speed. The force experienced by a person inside the elevator is:
A) Zero
B) Greater than the person’s weight
C) Equal to the person’s weight
D) Less than the person’s weight
Answer: C) Equal to the person’s weight
31. The unit of momentum in the SI system is:
A) kg·m/s
B) N·m
C) J
D) kg/m³
Answer: A) kg·m/s
32. When a car makes a sharp turn, what type of force keeps it moving in a circular path?
A) Centrifugal force
B) Frictional force
C) Centripetal force
D) Gravitational force
Answer: C) Centripetal force
33. A body of mass 5 kg is thrown vertically upwards with an initial velocity of 10 m/s. What is the kinetic energy of the body at its highest point?
A) 500 J
B) 0 J
C) 250 J
D) Cannot be determined
Answer: B) 0 J
34. The amount of matter in an object is called its:
A) Mass
B) Volume
C) Density
D) Weight
Answer: A) Mass
35. Which of the following is not a unit of power?
A) Watt
B) Joule
C) Horsepower
D) Kilowatt
Answer: B) Joule
36. The property of a body that resists change in its state of motion is called:
A) Inertia
B) Momentum
C) Velocity
D) Impulse
Answer: A) Inertia
37. An object weighs 10 N in air. When fully immersed in water, it weighs 6 N. What is the buoyant force acting on the object?
A) 10 N
B) 6 N
C) 4 N
D) 16 N
Answer: C) 4 N
38. The force of gravity on an object is called its:
A) Weight
B) Mass
C) Inertia
D) Density
Answer: A) Weight
39. The force that acts on an object to return it to equilibrium position is called:
A) Tension force
B) Elastic force
C) Restoring force
D) Gravitational force
Answer: C) Restoring force
40. Which of the following is a non-contact force?
A) Frictional force
B) Tension force
C) Magnetic force
D) Normal force
Answer: C) Magnetic force
41. Two forces, 5 N and 12 N, act on an object in the same direction. What is the net force on the object?
A) 5 N
B) 12 N
C) 17 N
D) 7 N
Answer: C) 17 N
42. When an object is thrown upward, the acceleration due to gravity:
A) Increases
B) Decreases
C) Remains constant
D) Becomes zero
Answer: C) Remains constant
43. Which of the following is not a unit of force?
A) Newton
B) Dyne
C) Kilogram-meter per second squared
D) Watt
Answer: D) Watt
44. The force that opposes the motion of an object sliding on a surface is known as:
A) Static friction
B) Kinetic friction
C) Rolling friction
D) Fluid friction
Answer: B) Kinetic friction
45. The gravitational force between two objects depends on their:
A) Mass and distance apart
B) Speed and acceleration
C) Volume and density
D) Size and shape
Answer: A) Mass and distance apart
46. The acceleration due to gravity on the surface of the Earth is approximately:
A) 9.8 m/s²
B) 1.62 m/s²
C) 6.67 × 10^-11 N·m²/kg²
D) 3.0 × 10^8 m/s²
Answer: A) 9.8 m/s²
47. When a net external force acts on an object, which of the following can happen?
A) The object can accelerate
B) The object can decelerate
C) The object can change direction
D) All of the above
Answer: D) All of the above
48. The momentum of an object is defined as its:
A) Mass times its velocity
B) Acceleration times its mass
C) Force divided by its mass
D) Kinetic energy divided by its mass
Answer: A) Mass times its velocity
49. When a skydiver falls through the air, the force of air resistance acting upward on the skydiver is also called:
A) Terminal velocity
B) Drag force
C) Gravitational force
D) Buoyant force
Answer: B) Drag force
50. Which of the following statements is true about an object in equilibrium?
A) The net force on the object is zero
B) The object must be at rest
C) The object must be moving with constant velocity
D) All of the above
Answer: D) All of the above
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