16 Friction Unit 8 Science in Daily Life
1 What is friction? 1. Force can make objects move. Push an eraser on the table with force. What kind of force is it? 2. Why does the eraser stop moving eventually even if you do not block it?
1
The eraser starts to move.
pushing force
2
The eraser slows down.
direction of friction
direction of motion
3
The eraser stops.
Quick Check When two objects, such as an eraser and a table, are in contact, resistance acts on their motion. It will slow down and even stop the motion. The resistance is called .
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