4.3 Biomechanics

How many classes of levers are there?

• 1

• 2

• 3

• 4

You determine what class a lever is by the part that is in the middle.

• True

• False

If the fulcrum is in the middle of the lever what class is it?

• 1st

• 2nd

• 3rd

• 4th

If the load is in the middle of the lever what class of lever is it?

• 1st

• 2nd

• 3rd

• 4th

Where is the fulcrum for levers on the human body located?

• Muscles

• Bones

• Joints

• Ligaments

Force is a push or pull on an object to create movement.

• True

• False

a change in speed

• acceleration

• velocity

• speed

• force

a push or a pull

• force

• distance

• velocity

• acceleration

What are the two factors that affect the momentum of an object?

• speed and velocity

• time and mass

• distance and displacement

• mass and velocity

Momentum is a ____________________ quantity

• science

• scalar

• vector

• energy