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3 years ago

A horse ran at a constant speed for 4 hours. Then, it decreased its speed by 7 mph for the

Physics

1 answer:

algol133 years ago

6 0

Distance travelled in 4 hours...

730 - 442 = 288 miles

Speed for the 4 hours;

Speed = 288/4 = 72 miles/hour

Speed for the rest of 442 miles...;

(72 - 7) = 65 miles/hour

Time taken for 442 miles..

Time taken = Distance/Speed

; 442/65 = 6.8

Time taken = 6.8 hours

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