Which type of energy is it?
A microwave causing a marshmellow to get bigger.
Thermal
A pencil falling off a table
Gravity.
What is friction?
Friction is a contact force that resists the sliding or rolling of one solid object, fluid, or gas over another.
What does F=ma stand for?
Force= mass x acceleration
A rollar coaster causing a cart to go up and down.
Mechanical
My eraser sticking to the whiteboard.
Magnetism.
What do we call friction that air causes?
Air resistance.
What unit do we measure force in?
Newtons (N)
The sun making it so we can see during the day.
Light energy.
A ball being thrown.
Push.
Why is friction important?
Friction is another force acting upon an object, which means we need to consider it in calculations.
What "law" is f=ma called?
Newton's second law.
A bow and arrow.
Mechanical.
Pull.
Which will cause more friction? Ice or concrete?
Concrete.
A toy car has a mass of 3kg and accelerates at 2m/s2. What amount of force was applied to it?
6N
A golf swing.
Mechanical.
A compass pointing North.
Magnetism
Will a toy car go faster on a smooth plastic surface or a rough sandpaper surface?
Smooth plastic surface
I push a toy car with the force of 12N and it moves at 4m/s2. What is the car's mass?
3kg