Motion - Speed, Velocity, and Acceleration

speed of an object in a particular direction

• motion

• velocity

• speed

• acceleration

when an object changes its position compared to a reference point.

• acceleration

• speed

• motion

• reference point

the rate at which speed or velocity changes

• acceleration

• average speed

• motion

• reference point

Speed = _______________

• Distance + time

• Distance – time

• Distance x time

• Distance / time

Tags

NGSS.MS-PS3-1

At what speed would a car have to move in order to travel 20 kilometers in 2 hours.

• 5 km/hr

• 10 km/hr

• 20 km/hr

• 40 km/hr

What is this?

"This airplane is traveling at 500 mph, West"

• Speed

• Velocity

• Acceleration

Tags

NGSS.MS-PS3-1

A helicopter flies west 200 miles in 2 hours. What is its velocity?

• 99 mph

• 100 mph south

• 400 mph south

• 297 mph south

The rate at which velocity changes and can be seen by speeding up, slowing down, or changing direction:

• Speed

• Velocity

• Acceleration

• Slope

A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

Tags

NGSS.MS-PS2-2

You ride your bike in a straight line at a constant speed of 10 km/h.

• Acceleration occurred because speed increased.
• Acceleration did not occur because neither speed nor direction changed.
• Acceleration occurred because you changed directions.
• Acceleration occurred because speed decreased.