Motion

Newton's First Law of Motion

Multiple Choice

Which following is the first law of motion?

• An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.

• The force acting on an object is equal to the mass of that object times its acceleration

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

Multiple Choice

What causes objects to move or stop moving?

• a force

• inertia

• Newton's first law

Multiple Choice

What are the two types of forces?

• push and pull

• inertia and rest

• gravity and free fall

Multiple Choice

If all forces acting on a object are equal, are the forces ...

• balanced

• unbalanced

Multiple Choice

If the net force of an object is greater than zero, will the object move?

• yes

• no

Multiple Choice

Which would be harder to move?

• a pencil

• an elephant

Multiple Choice

Which object has more inertia?

• a pencil

• an elephant

Multiple Choice

If you kicked a ball in space, will it eventually slow down and come to a stop?

• no it can go on forever

• yes air resistance will slow it down

Open Ended

Scenario…

You are riding a bus to school. You stand up to walk to the front of the bus to ask your friend a question.

SUDDENLY, something runs in front of the bus and the bus driver slams on his brakes …….

What will happen to you and why?

Open Ended

How do seat belts and air bags reduce inertia?