Friction

Which arrow represents the FORCE that the boy applied TO THE BOX?

• Force 1

• Force 2

• Force 3

• Force 4

Which arrow represents FRICTION in the given picture?

• Force 1

• Force 2

• Force 3

• Force 4

What force appears between A ROCK and THE GROUND when the rock is NOT moving?

• push

• pull

• sliding friction

• static friction

What force appears between the WHEELS and the ROAD when a car is MOVING?

• static friction

• sliding friction

• push

• pull

Which of the following can help REDUCE the friction between surfaces?

• 
• 
• 
• 

A man is pushing a box with a force of 50N but the box DOESN'T move. The ......... friction between the box and the floor must be greater than or equal to 50N.

Due to friction, what is caused when dubbing your hands together?

• mass

• volume

• heat

• light

Which one is TRUE about friction?

• It is always towards the contacting surface.

• It is the same as the applied force.

• It is perpendicular to the contacting surface.

• It is opposite to the applied force.

Which statement is TRUE?

• Friction only affects iron objects.

• Friction speeds up moving objects.

• Friction stops or slows down objects in motion.

• Friction does not affect objects in motion.

A box is placed on the ground. The static friction between it and the ground is 30N. How much force should be applied on the box to make it move?

• greater than 30N

• less than 3N

• less than 30N

• equal to 3N