C2 - Newton’s laws

What is Newton’s 1st law of motion?

An object will remain stationary or at constant velocity unless acted upon by an external force

Give the 5 different forms of acceleration

• starting

• Stopping

• Speeding up

• Slowing down

• Changing direction

What is Newton’s 2nd law of motion?

The force acting on an object is equal to its rate of change of momentum

What is the equation related to Newton’s 2nd law of motion?

Force = mass x acceleration

What will happen if there is no resultant force on a moving object?

It will carry on at the same velocity

Give an example of an experiment that can be used to demonstrate Newton’s 2nd law

The acceleration of a trolley on an air track

Describe the graph you would see if you plotted force against acceleration for this experiment

A straight line as force as Force = mass x acceleration

what is Newton’s 3rd of motion?

What two objects interact, the forces they exert on each other are equal and opposite

What is inertia?

The measure of how difficult it is to change an object’s velocity

Describe what would happen if 2 ice skates stood opposite each other and pushed each other away

Both skaters would feel the same sized force in opposite directions so accelerate away from each other