science

What is the equation for work?

• W=Fd

• A=Wp

• P=W/t

• W=d/F

What is the SI unit for power?

• Watt

• What

• When

• Where

What is a fulcrum?

• The point where a lever pivots.

• Something made of two simple machines.

• You

• A lever that only uses one motion.

What is a lever?

• A machine made up of a bar that pivots about a fixed point.

• A device that moves an object up and down.

• A flat sloped surface.

• A machine made of no simple machine.

What is an example of a wedge?

• axe

• pulley

• wheel

• lever

What is another name for 1 J/s?

• a watt

• work

• energy

• fork

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What divided by Input force is mechanical advantage?

What causes efficiency to always be less than 100%?

• friction

• power

• work

• lubricant

Lubricant reduces what?

• friction

• mechanical advantage

• efficiency

• watt

What is efficiency?

• output work over input work

• power divided by joules

• input force divided by input distance

• watt times power