Motion and Force Test Review

Which of Newton's laws is illustrated when a magician pulls a tablecloth out from under the dishes without disturbing them?

• first

• second

• third 

• fourth

What Unit do we measure Force in? 

• Newtons

• Joules

• Force

• Don't know

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

• 20N 

• 40N 

• 10N 

• 70N

Friction and gravity are both examples of a force.

• True

• False

Newton's third law states that any action will have a(n) _______ and ______ reaction

• Equal and similar

• Equal and opposite

• Equal and different

• Greater and opposite

The momentum of an object depends upon the object's ___________&_____________.

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

The equation to calculate momentum is

• p=mv

• p=1/2mv²

• p=mgh

• p=mg

Newton's Second Law says:

• Force = Mass x acceleration

• An object at rest stays at rest and an object in motion stays in motion until acted on by an outside force.

• For every action there is an equal and opposite reaction

Distance/Time

• energy

• speed

• velocity

• Newton

What is the speed of a car travelling 50m in 4s?

• 200 m/s

• 12.5 m/s

• 12.5 m

• 200m