Unit 3 Study Guide

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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NGSS.MS-PS2-1

NGSS.MS-PS2-2

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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NGSS.MS-PS2-2

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

• mass

• inertia

• force

• balance

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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NGSS.MS-PS2-4

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 a falling object is gravity, the object is said to be

• stationary

• decelerating

• in free fall

• a projectile

Forces can be added together only if they are

• acting on the same object

• balanced forces

• unaffected by gravity

• substantial

Tags

NGSS.MS-PS2-2

Any force that causes an object to move in a circle is called a(an)

• balanced force

• unbalanced force

• gravitational force

• centripetal force

In physical science, a push or a pull is called a(an)

• force

• acceleration

• inertia

• motion

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2