Physical Science Unit Two: Forces, Work, and Machines

True or False: When you push a skateboard and then let go inertia causes the skateboard to continue its forward motion. (a)  

• True
• False

True or False: An object in motion has to have unbalanced forces acting on it.

• True

• False

Tags

NGSS.MS-PS2-2

True or False: Every force has an equal and opposite force.

• True

• False

Tags

NGSS.MS-PS2-1

What force causes items to fall to Earth?

• gravity

• friction

• air resistance

• tension

Tags

NGSS.MS-PS2-4

Which forces cause an object to accelerate?

• unbalanced forces

• balanced forces

Tags

NGSS.MS-PS2-2

Does friction speed up or slow down a moving object?

• speed up

• slow down

Tags

NGSS.MS-PS3-5

What is the quantity of the acceleration due to gravity on Earth? (Don't put a label in your answer.)

Which law relates mass, force, and acceleration?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Conservation of Momentum

Tags

NGSS.MS-PS2-2

This law states, "to every action there is an equal and opposite reaction."

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Conservation of Momentum

Tags

NGSS.MS-PS2-1

Forces that are equal but opposite are ________

• balanced

• unbalanced

• inertial

• frictional

Tags

NGSS.MS-PS2-1