How is average speed calculated?

• Distance divided by time
• Mass times acceleration
• Time divided by distance
• Distance times time

1.  Harry Potter rode his broom a distance of 3 kilometers in10 minutes. What was his average speed?

• .30 km\min
• 30km/min
• 30 mph
• .30 min/km

What are simple machines?

• Help us do force
• Make less work
• Devices made of one or two parts that make work easier for humans.
• What we use

What kind of pulleys are there?

• Moveable
• Fixed
• Both
• None

What is force?

• Work on an object
• A push or pull
• The distance an object goes
• How long something takes to go a distance. 

Tags

NGSS.MS-PS2-2

What is acceleration?

• The rate an object is changing its speed.
• The rate an object changes its distance.
• Change in motion
• Change in direction.

What is speed?

• What makes things move
• Same as accleration
• The rate an object is changing its motion. 

Tags

NGSS.MS-PS3-1

What is distance?

• How far an object goes
• The measurement of an objects motion

A car moving at a constant rate.

• Unbalanced force
• Balanced force

A car at rest

• Balanced force
• Unbalanced force

Tags

NGSS.MS-PS2-2