Force and Motion Review

Which of the following is an example of exerting a force?

• a child running through a field

• a train speeding down a track

• a carpenter hammering a nail

• an airplane soaring through the sky

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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 force

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The tendency of an object to resist change in its motion is known as

• mass

• inertia

• force

• balance

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The greater the mass of an object

• the easier the object starts moving

• the greater its inertia

• the more balanced it is

• the more space it takes up

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

• friction

• acceleration

• gravity

• inertia

Which of the following is an example of rolling friction?

• your shoes on the sidewalk as you walk

• bike tires on the rode as you ride

• a boat n the water as it sails

• two hands rubbing together

the product of an objects mass and velocity is called its __

• inertia

• momentum

• acceleration

• force

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a push or a pull is called a

• force

• acceleration

• inertia

• motion

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The SI unit for force is ___

• Newtons

• meter

• kilogram

• pound

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Balance forces acting on an object

• always changes the objects motion

• sometimes changes the objects motion

• never changes the objects motion

• are not related to motion

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