Force and Motion

An object that appears to be stationary that serves as the framework of reference in motion is ________.

• gravity

• force

• reference point

A force is _____________.

• distance

• push or pull

• stationary

A space shuttle is leaving the earth's surface. What is the point of reference?

• the earth's surface

• the earth's core

• the earth's mantle

A boat is sailing away from the shore. What is the reference point?

• the sailor

• the shoreline

• the passenger

Some forces are applied even when objects do not touch.

• True

• False

• None of the above

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

NGSS.MS-PS2-3

A type of force which pulls or push an object by actually touching it.

• non-contact force

• gravitational force

• contact force

Latin word for force is" fortis" which means ____________.

• strong

• weak

• difficult

A parachutist falls to the earth is an example of a ___________.

• contact force

• non contact force

• friction

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

In most diagrams , ____________ is used to show forces.

• circle

• square

• arrow

Tags

NGSS.MS-PS3-1

The length of an arrow in a diagram shows the ___________ of the forces.

• mass

• distance

• strength