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sergeinik [125]
3 years ago
8

A race car circles 10 times around a circle with a diameter of 7 km track in 50 min. Using SI

Physics
1 answer:
vodka [1.7K]3 years ago
4 0

Average Speed = 23.33 m/s

<u>Explanation:</u>

Given:

Diameter = 7 km

So, to find the distance, we need to multiply it by 10 as the race car circles 10 times round this 7 km track.

Distance = 7 × 10 = 70 Km or 70,000 m

Time        = 50 mins

                = 50 × 60 = 3000 s

Now, in order to find the average speed for 10 cycles, we use the formula:

Speed = \frac {Distance} {Time}

So by substituting the above values in the given formula, we get:

Speed = \frac {70,000} {3000}

Speed = 23.33 m/s

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