Checkpoint 2:Unit 1-Newtons laws of Motion

Front

A person steps out of the boat and onto the dock. As the person moves forward onto the dock, the boat moves backward. Which statement best describes the backward motion of the boat as the person steps forward? Options: For every action there is an equal and opposite reaction., Every mass exerts a force on every other mass., An object at rest tends to stay at rest., Friction opposes the motion of an object.

Back

For every action there is an equal and opposite reaction.

Front

A child is bouncing in a bounce house. The more he pushes on the bounce house, the higher he goes into the air. Which of Newton's laws is most apparent in this situation?

Back

Newton's 3rd law

Front

A 20 kg bike accelerates at 10 m/s². What was the net force?

F= ma

Back

200 Newtons

Front

A person is pushed forward into their seat belt when a car stops. Which law is this?

Back

1st Law

Front

A trampoline pad launches a child upwards with a force equal to the downward force of the landing the moment before.

Back

Newtons 3rd law

Front

Force equals...

Back

mass x acceleration

Front

The swing of a hammer drives a nail partially into a piece of lumber. The hammer puts a downward force on the nail, and the nail puts an upward reaction force on the hammer. Which law does this show?

Back

Newtons 3rd law

Front

Which law states that an object at rest has no motion until an unbalanced force acts on it?

Back

Newtons 1st law

Front

The mass of a car is 1000 kg. How much force would be required to accelerate the car at a rate of 3 m/s²?

Back

3000 N

Front

A 20-N net force acts on an object with a mass of 2.0 kg. What is the object's acceleration? Remember a=f/m

Back

10 m/s²