Force QuizOnline version Test your knowledge on Grade 9 Force with these 14 questions! by edwine okuom 1 What is the SI unit of force? a Joule b Pascal c Newton d Watt 2 Which of the following is a contact force? a Magnetism b Friction c Gravity d Electricity 3 What is the formula for calculating force? a Force = Mass x Acceleration b Force = Mass / Acceleration c Force = Mass - Acceleration d Force = Mass + Acceleration 4 Which law states that for every action, there is an equal and opposite reaction? a Newton's Third Law of Motion b Newton's First Law of Motion c Law of Inertia d Newton's Second Law of Motion 5 What is the force that opposes motion between two surfaces in contact? a Friction b Tension c Gravity d Magnetism 6 Which force keeps an object in circular motion? a Frictional Force b Centripetal Force c Tension Force d Normal Force 7 What is the force that acts on an object in a fluid and opposes its motion? a Centripetal Force b Magnetic Force c Drag Force d Tension Force 8 What is the force that attracts two objects with mass towards each other? a Tension b Electromagnetic Force c Gravity d Friction 9 Which force allows a rocket to lift off the ground? a Thrust b Tension c Drag d Gravity 10 What is the force exerted by a stretched or compressed spring? a Gravity b Tension Force c Spring Force d Frictional Force 11 What is force? a A scalar quantity b A vector quantity c A unit of measure d A constant 12 Which of the following is NOT a type of force? a Gravitational force b Magnetic c Electrostatic d Stationary 13 What happens to the acceleration of an object when the force acting on it increases? a The acceleration decreases b The acceleration remains constant c The acceleration increases d The acceleration becomes negative 14 When an object moves through the air, the resistance it encounters is known as: a Centripetal force b Tension force c Gravitational force d Air resistance 15 What is the formula for calculating force? a Force = Mass - Acceleration b Force = Mass / Acceleration c Force = Mass × Acceleration d Force = Mass + Acceleration 16 What unit is force measured in? a Pascals (Pa) b Newtons (N) c Kilograms (kg) d Joules (J) 17 What is the acceleration due to gravity on Earth? a 8.5 m/s² b 9.0 m/s² c 10 m/s² d 9.81 m/s² 18 If a 5 kg object is accelerated at 2 m/s², what is the force? a 5 N b 20 N c 15 N d 10 N 19 What is the effect of balanced forces on an object? a The object stops moving b The object accelerates c The object remains at rest or moves at constant speed. d The object changes direction 20 What happens to the force if mass is doubled while acceleration remains constant? a The force triples b The force doubles. c The force halves d The force remains the same 21 Which of the following is an example of unbalanced forces? a A car accelerating forward. b A book resting on a table c A person standing still d A ball rolling at constant speed 22 What is inertia? a The speed of an object b The force acting on an object c The tendency of an object to resist changes in motion. d The weight of an object 23 What is the net force if two forces of 5 N and 3 N act in the same direction? a 3 N b 8 N c 15 N d 2 N 24 What does friction do to the motion of an object? a It changes the direction b It increases the speed c It opposes the motion. d It has no effect
New game