Chapter 2 Forces Vocab

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 total force.

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

• mass

• inertia

• force

• balance

the greater 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 of gravity on a person or object on the surface of a planet is called

• mass

• terminal velocity

• weight

• free fall

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one way to increase acceleration is by

• increasing mass

• decreasing mass

• decreasing force

• increasing both force and mass proportionally

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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

which of the following is an example of rolling friction?

• your shoes on a sidewalk as you walk

• bike tires on the road as you ride

• a boat on the water as it sails

• two hands rubbing together

when the only force acting on an object is gravity,the object is said to be

• stationary

• decelerating

• in free fall

• a projectile

Air resistance is a type of

• motion

• acceleration

• velocity

• friction