Question

ACTIVITY 5
Direction: Write plus sign (+) ifthe phrase tells a way of increasing friction and
minus sign (-) if it tells a way of decreasing friction.
1. using rollers
2. using brakes in cars
3. wearing rubber shoes
4. applying oil on the surface of objects
5. using wheels
6. using tires with more hollows and bumps
7. applying soap and water
8. putting sand on the icy sidewalk
9. applying wax to skis
10. using a stream of air
​

Answer 1

Answer:

1+

2+

3+

4-

5-

6+

7-

8-

9-

10+