1 What is the formula for force according to Newton's second law? A F = m × a B F = m / a C F = a / m D F = m + a
2 What is the effect of friction on a moving object? A It increases speed B It decreases speed C It changes direction D It has no effect
3 What is the net force when two forces of equal magnitude act in opposite directions? A Zero B Equal to one of the forces C Double the force D Half the force
4 What is the gravitational force between two objects dependent upon? A Their masses and distance B Their volumes C Their temperatures D Their colors
5 What happens when unbalanced forces act on an object? A The object remains at rest B The object moves in a constant velocity C The object changes its motion D The object stops moving
6 Which of the following is an example of a balanced force? A A book resting on a table B A car accelerating on a highway C A ball rolling down a hill D A rocket launching upward
7 Which of the following is an example of an unbalanced force? A A book on a shelf B A person pushing a stalled car that starts to move C A lamp sitting on a table D A hanging picture frame
8 What is the force that acts on a boat floating on water? A Gravity only B Buoyant force only C Both gravity and buoyant force D Neither
10 Which of the following is a type of non-contact force? A Applied force B Normal force C Tension force D Magnetic force
11 What is the force that causes a rock to fall when dropped? A Gravity B Friction C Magnetic force D Elastic force
12 What type of force is exerted by a rope when pulled? A Tension B Friction C Gravity D Magnetic force
13 What is the force that causes a falling object to accelerate? A Friction B Gravity C Air resistance D Magnetic force
16 What is the relationship between force and acceleration when mass is constant? A Force is directly proportional to acceleration B Force is inversely proportional to acceleration C Force is independent of acceleration D Force equals acceleration divided by mass
17 What is the force that makes a car move forward when the engine is running? A Gravity B Friction C Applied force from the engine D Air resistance
18 Which force acts between two charged objects? A Magnetic force B Electrostatic force C Gravitational force D Elastic force
20 What is the net force if two forces of 5 N and 3 N act in the same direction? A 2 N B 8 N C 15 N D 0 N
21 What is the force exerted by a magnet? A Gravitational force B Electrostatic force C Magnetic force D Elastic force
22 What is the force that opposes the motion of an object through air? A Friction B Air resistance C Gravity D Magnetic force
23 What is the normal force? A The force that is perpendicular to a surface B The force that is parallel to a surface C The force that pulls objects down D The force that pushes objects sideways
24 What does Newton's first law of motion state? A Force equals mass times acceleration B For every action there is an equal and opposite reaction C An object at rest stays at rest unless acted upon by an unbalanced force D Energy cannot be created or destroyed
25 What is the force exerted by a stretched spring called? A Gravitational force B Elastic force C Frictional force D Magnetic force