Velocity, Acceleration, Distance, Displacement, Frame of Reference

What is needed to describe motion completely?

• distance
• time
• speed
• frame of reference

Tags

NGSS.MS-PS3-1

Are people on a plane moving?

• Yes, planes are designed to transport people.
• No, you sit still on plane.
• It depends on what you compare it to.
• Flight is a myth.  The Earth is flat.

The scientific (SI) unit for measuring distance is the ________ .

• mile
• foot
• kilometer
• meter

There are _____ centimeters in a meter.

• 10
• 100
• 1,000
• 10,000

After completing one trip on a roller coaster, the roller coaster's ________ is zero.

• displacement
• reference point
• length
• distance

Because displacement has a magnitude and direction it is called a ______. 

• distance
• vector
• arrow
• length

Displacement is distance combined with

• direction
• speed
• velocity
• magnitude

A speedometer shows the ____________  speed of a vehicle.

• speed
• average speed
• instantaneous speed
• velocity

If a person walked at 1.5 m/s for 15 s he/she would travel a distance of ________.

• 10 m
• 22.5 m
• 15 m

When a car goes around a corner at 20 mph, why do we say it  accelerates?

• The car is accelerating because of the velocity is constant
• The car accelerates because it's going 20 mph
• Cars always accelerate when they are in motion
• The car is accelerating because it's changing direction