force and motion

What is gravitational force?

• A force that attracts object toward the earth

• A force that resist the movement when two surface in contact

• A force that stretches material

• A force that make object float

What are effects of force?

• can change shape

• can change size

• can change motion

• can expand air pressure

The object won't float if the buoyant force is less than the actual weight.

• False

• True

What is the name of this diagram?

• Buoyant line

• Newton lines

• Ship lines indicator

• Plimsoll lines

What does a lever made up of ?

• Effort

• Bar

• Load

• Fulcrum

How many class of lever that the fulcrum is in the middle?

• 9

• 1

• 3

• 2

Distance of Effort is equal to?

• Force that is emitted

• Distance of Load

• Gravitational force

• Perpendicular distance

What is the other name of fulcrum?

• Lever

• Pivot

• Center of gravity

• anticlockwise