Newtons first law relates to the car because it does not move until the force of the mousetrap moves and stops when the string runs out or the car hits the wall.

 

- Newtons second law: Acceleration is produced when a force acts on a mass. The greater the mass, the greater the amount of force needed.

         Newtons second law of motion affects our mousetrap car because the more the car weighs the slower it goes. The less the car weighs the faster it will go because it has less mass so the force will not be as big to get the car moving.

 

- Newtons third law: For every action there is an equal and opposite reaction.

Newtons third law affects the car because for every action there is an equal and opposite reaction. That means that as the wheels spin on the floor friction is created and get the car moving.