Forces and Motion

What is a force?

• the PUSH or PULL on an object 
• The MOTION an object creates
• The objects HITTING one another
• Going REALLY FAST

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

Which one is balanced?

• top
• bottom
• both

The FORCE that PULLS things down or back to EARTH.

• Speed
• Gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Lizbeth sees a guy at the dance that she has a crush on and decides to chase him and ask him out on a date.. Find her speed if she runs 80 m in 5 s.  

• 400m/s
• 16m/s
• 15m/s
• 16 m

As distance between two objects increase the pull of gravity 

• Increases
• Decreases
• Stays the same

Tags

NGSS.MS-PS2-4

As mass increases, what happens to gravitational force?

• increases
• decreases
• stays the same
• i don't know

Tags

NGSS.MS-PS2-4

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

What type of friction is not moving?

• static
• sliding
• fluid
• rolling

A type of friction that occurs when air pushes against a moving object causing it to decelerate.

• surface area
• air resistance
• velocity
• gravity 

Rougher surfaces have ...

• greater friction
• less friction
• the same level of friction