Work done and energy transfers

Cards (4)

What is the equation to calculate work done?
Work Done (Joules) = Force (Newtons) × Distance (meters)
When is 1 joule of work done?
When a force of 1 Newton causes a displacement of 1 metre.
What is meant when work is done against frictional forces?
A rise in temperature of the object occurs.
Kinetic energy is converted to heat.
Why does air resistance slow down a projectile?
The object does work against the air resistance.
Kinetic energy is converted in to heat, slowing down the object.