A non-contact force means there is NO touching needed to make the force happen between the two objects.  Choose the non-contact forces.

• using a magnet, electricity, pulling a sled
• hitting a baseball, using a magnet, pushing your friend
• using a magnet, dropping a ball, two balloons repelling

Tags

NGSS.MS-PS2-5

An unbalanced force can make all of these things happen except...

• a moving object changes direction
• an object just sits there
• a moving object speeds up
• a moving object stops

Tags

NGSS.MS-PS2-2

Balanced forces can cause

• an object to speed up or slow down
• an object to stay still or move at a constant speed and direction

Tags

NGSS.MS-PS2-2

Who is winning this race?

• A
• B

Tags

NGSS.MS-PS3-1

What speed is the person with the red line going?

• 20 km per hour
• 10 km per hour
• 50 km per hour
• 30 km per hour

Tags

NGSS.MS-PS3-1

When was the ostrich going at a constant speed?

• Between 0 and 30 min.
• Between 45 and 60 min.
• Between 30 and 45 min.

Tags

NGSS.MS-PS3-1

this force is ___________ and there will be 

• unbalanced, no movement
• balanced, movement to the left
• balanced, no movement

Tags

NGSS.MS-PS2-2

This force is _____________ and there will be _________________

• balanced, movement to back left
• unbalanced, movement to the back left
• balanced, no movement

Tags

NGSS.MS-PS2-2

If all four forces are balanced, the plane will

• plummet to the ground
• fly faster and faster
• fly slower and slower
• fly at a constant speed and direction

Tags

NGSS.MS-PS2-2

If two spheres of different masses, but the same size are dropped at the same time

• they will hit the floor at the same time
• the larger mass will hit first
• the smaller mass will hit first

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4