12.Which of the following is not an example of reducing friction?
A. Lubricating with oil
B. Using ball bearings
C. Pouring sand on ice
D. Putting wheel on furniture
A. Lubricating with oil
B. Using ball bearings
C. Pouring sand on ice
D. Putting wheel on furniture
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Answer:
B
Explanation:
A good example of this is a ball or wheel. They roll to help reduce friction. Another way to reduce friction is with a lubricant like grease or oil. Machines and engines use grease and oil to reduce friction and wear so they can last longer.
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