1 What is the force exerted by a stretched spring called? A Gravitational force B Elastic force C Frictional force D Magnetic force
2 What does a force do to an object? A Always changes its mass B Always changes its color C Can change its motion or shape D Always changes its temperature
3 What does Newton's third law state? A Force equals mass times acceleration B Every action has an equal and opposite reaction C An object in motion stays in motion unless acted upon by an unbalanced force D Energy is conserved
4 Which of the following is a type of non-contact force? A Applied force B Normal force C Tension force D Magnetic force
6 What is the force that opposes the relative motion of layers in a fluid? A Viscosity B Friction C Gravity D Elastic force
7 What is an example of a contact force? A Gravity between Earth and Moon B A magnet attracting iron C A person pushing a cart D Static electricity
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
9 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
10 What is the force that causes a ball to bounce back after hitting the ground? A Elastic force B Gravitational force C Frictional force D Magnetic force
11 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
12 What is the effect of an unbalanced force on an object? A It causes acceleration B It keeps the object at rest C It maintains constant velocity D It makes the object disappear
13 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
14 What is an example of a balanced force? A A tug-of-war with neither side moving B A falling apple C A car crashing into a wall D A rocket taking off
15 What is the force that enables a parachutist to fall at a constant speed? A Gravity equals air resistance B Gravity is greater than air resistance C Air resistance is greater than gravity D No forces are acting
16 What is the force that opposes the motion of an object through air? A Friction B Air resistance C Gravity D Magnetic force
17 What is the force that causes a falling object to accelerate? A Friction B Gravity C Air resistance D Magnetic force
18 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
19 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
20 What is the force that acts between two surfaces in contact and opposes motion? A Tension B Normal force C Friction D Gravity
21 What is the force that acts on a skydiver before terminal velocity is reached? A Only gravity B Gravity and air resistance, with gravity greater C Air resistance only D Neither gravity nor air resistance
22 What is the force that resists motion between two surfaces in contact? A Gravity B Friction C Magnetism D Tension
24 What type of force is used to open a door by pushing on the handle? A Applied force B Frictional force C Gravitational force D Magnetic force
25 Which force acts between two charged objects? A Magnetic force B Electrostatic force C Gravitational force D Elastic force