Jeanine is twice as old as her brother Marc. If the sum of their age is 24, how old is Jeanine
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Answer:
If friction did not exist, it would be hard for us to slow down in running, or putting breaks on a car, and more!
If friction did not exist, your car will slide down the road even if you try your best to put the brakes on a car. Friction is a very important force to slow down things that are moving very fast
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