How does friction help us move from place to place?

• Friction does not help us.
• Friction keeps us from slipping and sliding.
• Friction only helps cats.
• Friction makes us slip and fall.

In which of the following activities is friction useful?

• sliding down a snowy hill on a sled

• ice skating

• running around a track

• roller blading

Lynda is try to get her dog to move but she doesn't seem to be able to. This is because?

• Her dog is stubbon

• The forces between Lynda and the dog are unbalanced

• The forces between Lynda and the dog are balanced

• Lynda is not using Jedi force

Tags

NGSS.MS-PS2-2

Is a tug-of-war using a push or a pull?

• push

• pull

• neither

• both

Tags

NGSS.MS-PS2-1

When forces on a moving object are balanced what will happen?

• Nothing, the object will stay moving in the same direction at the same speed.

• It will move to faster

• It will move to slower

• It will spin in a circle

In what way can forces affect motion?

• They can make objects start moving

• They can make objects stop moving

• They can make objects change direction

• All of them

Tags

NGSS.MS-PS2-2

Which would require the most force to move?

• a toy car
• a sleeping cat
• a science book
• a chair with a friend sitting in it

Tags

NGSS.MS-PS2-2

A car traveled 120 km in 2 hours. Using this data, you can calculate its _____.

• speed.
• velocity.
• position.
• mass.

Tags

NGSS.MS-PS3-1

A _____ is a pull or a push.

• force
• friction
• gravity
• speed

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

One way that a force can cause the change in an object's motion is to...

• do nothing.
• eat ice cream.
• start the object moving.
• shine on the object.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2