Ch 9 Motion and Machines

Force is measured in joules

• True

• False

The place where a lever turns is the fulcrum

• True

• False

The resistance force works against the effort

• True

• False

A simple machine combines two or more machines to make work easier

• True

• False

Galileo is credited with the three laws of motion that we use today

• True

• False

A block and tackle combines multiple fixed and movable pulleys

• True

• False

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is the ability to make something move

• Mechanical energy

• Chemical energy

• motion

• Inertia

A fixed unmoving object or location is

• potential energy

• a joule

• a reference point

• an effort force

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is the change of an object position

• kinetic energy

• speed

• motion

• resistance

The ___ of an object is determined by its mass and velocity

• momentum

• effort force

• momentum

• stored energy

Tags

NGSS.HS-PS2-2