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Oxana [17]
3 years ago
6

If a car is traveling 60 mph, its tires may have an rpm of 840. How many revolutions do the car’s tires make in one second?

Physics
1 answer:
Varvara68 [4.7K]3 years ago
5 0

Forget about the car's speed.  You don't need it.

The tires spin 840 rpm.  That's 840 <em>Revolutions per Minute</em> .

There are 60 seconds in 1 minute.  So something that happens 840 times in 1 minute happens (840 / 60) times every second.

(840 rev per minute) / (60)  =  <em>14 revs per second</em> .

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