Forces Test Review

Who came up with the 3 laws of motion?

• Mendeleev

• Moseley

• Newton

• Einstein

• Galileo

"F = m x a" is which law of motion?

• 1st

• 2nd

• 3rd

• None of these

A ________ force like _______ does NOT touch the object.

• field ; friction

• field ; gravity

• contact ; friction

• contact ; gravity

Frictional force is a ___ force that acts in which direction, compared to the motion?

• field ; same

• field ; opposite

• contact ; same

• contact ; opposite

Ignoring air resistance, what force acts on an object in free fall?

• air resistance

• friction

• normal

• gravity

• tension

An elevator is attached to a steel cable, what is the upward force?

• normal

• tension

• spring

• air resistance

• gravity

A force can cause object to ________

• speed up

• slow down

• change direction

• all of these

• none of these

Inertia can be used to summarize which law of motion?

• 1st

• 2nd

• 3rd

• 4th

Balanced forces have what effect on object's motion?

• speed up

• slow down

• change direction

• all of these

• no effect

The normal force is a ____ force that is equal & opposite gravity on a ______

• parallel ; flat surface

• parallel ; incline/slope

• perpendicular ; flat surface

• perpendicular ; incline/slope