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How is energy transferred?
By doing work.
What does air resistance cause energy to be transferred to during a fall?
The thermal energy stores of the object and surroundings.
How does the friction between a car's brakes and its wheels affect the car?
It does work as the car slows down, transferring energy from the wheels' kinetic energy stores to the thermal energy store of the surroundings.
What is the energy transfer equation for a falling object with no air resistance?
Energy lost from the g.p.e. store = Energy gained in the kinetic energy store.
What happens in a collision between a car and a stationary object?
The normal contact force between the car and the object does work, transferring energy from the car's kinetic energy store to other energy stores such as the elastic potential and thermal energy stores of the object and car body.
What does the gravitational force do when an object is dropped from a height?
It does work.
What is another way of saying energy transferred?
Work done.
What does work done on a ball by throwing upwards cause?
Energy transfer from the chemical energy store of the person's arm to the kinetic energy store of the ball and arm.
Describe the energy transfers that occur when the wind causes a windmill to spin.
Energy is transferred from the kinetic energy of the wind to the kinetic energy of the windmill blades.
Where is energy transferred from and to as an object falls?
From the gravitational potential energy (g.p.e) store to the kinetic energy store.
