Question

1. Smooth surfaces produce

2. Force of friction is an example of​

Answer 1

Answer:

1. Smooth surface produce less friction.

2.Rubbing both hands together to create heat.

A sled sliding across snow or ice.

Answer 2

1) Smooth surface produce less friction.

2) A coaster sliding against a table.

A washing machine pushed along a floor.

Hope it helps you!