Forces of Motion

Which of Newton’s three laws involves the acceleration of an object?

• First Law

• Second Law

• Third Law

• None of the above

Newton’s first law of motion applies

• A. To moving objects

• B. To objects that are not moving

• C. To objects that are accelerating

• D. Both (a) and (b)

An object’s stubborn resistance to change its state of motion is called

• acceleration

• inertia

• velocity

• Isaac Newton

Which of the following formula correctly describes Newton’s Second Law of Motion?

• Force = Mass x Acceleration

• Force = Mass/Acceleration

• Force = Acceleration/Mass

• Force = Distance/Time

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NGSS.MS-PS2-2

An object is in projectile motion if

• It is thrown with a horizontal push

• It is accelerated downward by gravity

• It does not accelerate horizontally

• All of the above

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NGSS.MS-PS2-2

A golf ball and a bowling ball are moving at the same velocity. Which has more momentum?

• The golf ball, because it has less mass.

• The bowling ball, because it has more mass

• They both have the same momentum because they have the same velocity.

• There is no way to know without additional information.

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NGSS.MS-PS3-1

There are many factors that would affect how fast a bowling ball moves. Which of the two factors listed below is the most important in determining the acceleration rate of a bowling ball?

• Direction and time

• Mass and direction

• Force and direction

• Force and mass

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NGSS.MS-PS2-2

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• Remain in motion

• Eventually come to a stop

• Transfer its energy to another object

• Accelerate in the absence of friction

Air resistance is

• Sliding friction

• Rolling friction

• Fluid friction

• Static friction

Astronauts float inside the space shuttle because they

• Are mass less

• Have no gravitational force acting on them

• Are in free fall

• Are weightless