P5 MORE ABOUT FORCES

Frictional force acts in the .................. direction of motion

• same

• upward

• opposite

• downward

The rougher the surface, the greater the frictional force of the object.

• True

• False

What are 2 better ways to reduce the frictional force?

• applying oil on the machine

• not using the ball bearings

• reduce the wheels on the suitcase

• polishing the surface of the slide

The book will move further along a smooth surface than a rough surface.

• true

• false

What is the problem of frictional force between the boat and the water?

• it speeds up the boat

• it slows down the boat

• It overheats the boat

• the boat will wear out

Weight is measured in.....

• Kilogram

• Newtons

• Kilometer

Mass is measured in.....

• Kilograms

• Kilometers

• Newtons

If these teams are pulling with the same amount of force what will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

What will cause an object to move?

• Applied forces
• Balanced forces
• Unbalanced forces

When forces are _________ the object DOES NOT move.

• unbalanced
• balanced
• heavy
• light