Forces and Motion Quiz

Air resistance is a type of:

• motion.

• acceleration.

• velocity.

• friction.

Balanced forces acting on an object:

• always change the obiect's motion.

• sometimes change the object's motion.

• are not related to motion.

• never change the object's motion.

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Unbalanced forces acting on an object:

• will change the obiect's motion.

• sometimes change the object's mass.

• are not related to motion.

• never change the object's motion.

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What happens when two forces act in the SAME direction?

• They cancel each other out.

• The stronger one prevails.

• They add together.

• Their sum divided by two is the total force.

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The scientist who devised the 3 laws of motion was:

• Isaac Newton

• Albert Einstein

• Charles Darwin

• Stephen Hawking

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In football, why are the linemen, that protect a quarterback from being tackled by the opposing team, better if they are very large?

• Because they can accelerate faster the bigger they are.

• Because the bigger they are the more inertia they have, which makes them harder to be moved out of the way by the other teams players.

• Because the larger they are the easier they can move around.

• Because the larger they are the less energy bars they will need to eat during the game.

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The force that one surface exerts on another when the two rub against each other is called:

• friction

• acceleration

• inertia

• gravity

Friction acts in a direction ________ to motion

• opposite

• similar

• parallel

• perpendicular

The law of universal gravitation states that any two objects in the universe, without exception

• attract each other.

• repel each other.

• combine to provide a balanced force.

• create friction.

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According to the Third Law, when a person hits a golf ball,

• The golf ball doesn't push back

• The amount the golf ball pushes back depends on its mass

• The golf ball pushes back a little

• The golf ball pushes back with equal force in the opposite direction

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