FORCES AND MOTION 1

How many of the pictures show only pulling forces?.........................

• 4

• 3

• 2

• 1

What is this piece of equipment called?

• Force meter

• Sound level meter

• Light meter

• Ruler

Name force Y.

• Gravity

• Air resistance

• Friction

• Magnetic force

Friction is a __________

• Contact force

• Non-contact force

• Magnetic force

• None of these

Friction always ____________

• helps the motion

• opposes the motion

• both of these

• none of these

Which one of these characteristics does a smooth surface has?

• Less frictional force

• More frictional force

• Sometimes less and sometimes more force

• All of above

What increases friction?

• More speed

• More surface area

• Rough surfaces

• Smooth surfaces

Name force A.

• Air resistance

• Magnetic force

• Gravity

• Weight