How much work is done when you push a sled across the snow with a force of 70.0 N for a displacement of 20.0 m?

It takes a car 130 seconds to pull a trailer 5 m down the road and exerts a horizontal force of 7,000 N. At what power level is the car performing?

A crane can lift a 500 kg mass to height of 30 m in 2 minutes. The work done by the crane is: (*You must compute the force of the mass being lifted first)

How much work is done by a 500 Watt car engine in 10 minutes?

What is a device that does work with only one movement and changes the size or direction of a force?

The work output of a machine divided by the work input is the ______________ of the machine.

A machine that changes only the direction of a force has a mechanical advantage of:

If trying to move a very heavy piece of furniture using a ramp should you choose a short ramp or a long ramp? Explain why.

The mechanical advantage of a pulley system is equal to the number of:

How does using a pulley make moving heavy objects easier?

You are debating buying a new can opener. This particular can opener requires 2,000 J of work to begin opening the can and it does 500 J of work. How efficient is this can opener?

A bottle cap is an example of what simple machine?

How is a wedge like an inclined plane?

Which is an example of a wheel and axle?

Something that reduces the friction of moving something:

Something that holds things together or is used to lift something:

Something that can split an object apart:

A ramp:

Something that uses a rope and can change the direction of a force:

Something similar to a see-saw that can lift an object:

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