What makes an object stop or slow down?

Friction is present in our everyday lives. Which of the following situations involves friction?

Which of the following increases friction?

Which of the following surfaces has the least amount of friction?

What type of friction occurs when an object is not moving?

A book on top of the table shows static friction. What do you think is static friction?

What  causes objects to fall down to the ground?

Gravity attracts all physical bodies. Which of the following statements is TRUE about gravity?

Gravity depends on the mass of an object. Which of the following would be most difficult  to lift against gravity?

What is the effect of the Earth’s gravity on us?

The effect of friction can be desirable or undesirable. Which of the following shows an undesirable effect of friction?

Friction can be seen everywhere. Which of the following statements is true about friction?

Rubbing your hands show frictional force. What do you feel when you rub your hands?

Gravity pulls an object downward. How do you define gravity?

Gravity affects movement of an object. Which of the following situations show the effect of gravity?

Why does a bicycle travel faster when moving down than moving up?

Gravity pulls us down. What might happen if you move against gravity?

It is the frictional force acting between surfaces at rest.

It is a force that acts between moving objects.

Smooth surface has ___________ friction.