Physical Science fall review

Air Resistance is ____________ acting on something moving through the air.

• Gravity

• Friction

• Wind

• Force

Weight equals

• Mass x time

• time x weight

• Gravity x friction

• Mass x gravity

A force is a _________________ or __________________.

• Tug, spring

• Push, shove

• Push, pull

• Movement, stillness

Which of the following would occur as a result of unbalanced forces?

• The moon orbits Earth at a constant speed
• Twelve children leaning on a wall.
• A bus moves on the highway at 65 miles per hour
• Some kids fall playing tug-of-war

According the Newton's Second Law, what factors affect force?

• speed and power
• shape and material
• mass and acceleration
• mass and weight

Inertia says that the heavier an object is, the _________ it is to move.

• easier

• harder

• smarter

• more important

What is Newton's First Law?

• Equal and Opposite...

• F = ma

• An object in motion will stay in motion and obect at rest will stay at rest - unless acted upon by an outside force.

• Don't park in a fire lane.

What is Newton's Second Law?

• Force = Mass x Acceleration ( F = ma )

• Equal and Opposite

• The Law Of Inertia

• Everybody loves the beach in Summer.

What is Newton's Third Law?

• F = ma

• For every action there is an equal and opposite reaction.

• Cheaters never prosper.

• Don't jaywalk.

Where is potential energy the greatest in the roller coaster?

• A

• B

• C

• D