Question

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Please answer with proper steps.

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Answer 1

Explanation:

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Answer 2

Answer:

a. Given,

            d = 10 km = 10000 m

            t = 15 min = 900 s

             v = d/t

               = 10000 m/900 s = 11.12 m/s = 40 km/h

b. Given,

           d = 60 km = 60000 m

           t = 45 min = 2760 s

           v = d/t = 60000 m/2760 s = 21.739≈ 21.7 m/s = 80 km/h

c. Given,

           d = 60 + 10 km = 70 km = 70000 m

            t = 15 +15 +45 min = 75 min = 4500 s

            v = d/t = 70000 m/4500 s = 15.56 m/s = 70 km/h

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