Unit 2 Motion and Forces

Velocity describes __________.

• gravity and direction

• speed and direction

• force and direction

• speed and momentum

What is speed?

• time (hours or seconds)

• distance (miles or meters)

• distance per time (miles per hour or meters per second)

• time per distance (hours per mile or seconds per meter)

Tags

NGSS.MS-PS3-1

Which of the following is an example of velocity?

• 10

• 10 m/s

• 10 m to the right

• 10 m/s to the right

Acceleration is best defined as the rate of change of __________ of an object.

• velocity

• position

• force

• speed

Which of the following describes acceleration?

• s/m

• m²

• m/s

• m/s²

Which of the following is the main difference between speed and velocity?

• Speed is measured over time.

• Speed has direction and velocity.

• Velocity has both speed and direction.

• Speed is constant.

Which of the following best describes force?

• a push or pull

• moving an object

• slowing down

• speeding up

Tags

NGSS.MS-PS2-1

Intermolecular forces hold together which of the following?

• charged particles

• molecules

• compounds

• atoms

The force that moving, charged particles exert on one another is called __________.

• electromagnetic force

• contact force

• intermolecular force

• gravity

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NGSS.MS-PS2-3

An object moving at a constant velocity will __________.

• increase in speed

• come to a stop on its own

• come to a stop, unless it is pushed by another force

• maintain a constant velocity until acted on by another force

Tags

NGSS.MS-PS3-1