1) Which of the following is an example of applied force? a) A book falling to the ground b) Pushing a chair across the floor c) The Earth pulling a satellite d) A boat floating on water 2) Which force acts to pull objects toward the Earth's center? a) Friction b) Upthrust c) Gravity d) Normal force 3) What does normal force do in relation to gravity? a) It pulls objects toward the Earth b) It acts against gravity and supports objects placed on surfaces c) It prevents objects from moving d) It causes objects to float on water 4) Upthrust is an upward force exerted by _____ that works against gravity. a) Water b) Air c) A person d) The ground 5) Friction occurs between: a) Two solid objects only b) Air and water c) Two surfaces in contact d) Only moving objects 6) Which of the following forces acts against the motion of objects moving through air? a) Friction b) Normal force c) Air resistance d) Water resistance 7) Which type of friction is experienced by an object moving through water? a) Air resistance b) Friction c) Water resistance d) Normal force 8) A skydiver with a parachute will experience greater: a) Gravity b) Air resistance c) Normal force d) Upthrust 9) Water resistance is experienced more by a fish with: a) A narrow body b) A smooth skin c) A wide body d) A fast swimming speed 10) Which of the following forces acts to slow down a moving object by opposing its motion? a) Gravity b) Air resistance c) Normal force d) Upthrust

Recap on Types of Force

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