Forces and Motion

A force that acts at a distance and can not be seen

• magnetism
• friction
• lubricants
• strength

A pull that attracts objects to each other

• gravity
• friction
• force
• nucleus

The force that opposes motion between two surfaces that are touching

• friction
• magnetism
• gravity 
• lubricants

If a force is applied in the opposite direction as the object is moving, the object will

• slow down or stop
• speed up
• turn 
• bounce

Which is NOT a way that friction is reduced?

• lubricants
• rollers
• making a surface smoother
• making a surface rougher

A location relative to another object

• position
• direction
• speed
• magnitude

The course or path that an object is moving

• direction
• speed
• position
• fast

A measure of how fast an object is moving

• speed
• distance
• direction
• position

When forces are equal in strength but opposite in direction

• balanced
• unbalanced
• direction
• speed

Do not change the motion of an object

• unbalanced forces
• balanced forces
• speed
• position