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kondor19780726 [428]
2 years ago
12

John took 0.75 hours to bicycle to his grandmother's house, a distance of 4 km. What is his velocity?

Physics
1 answer:
ddd [48]2 years ago
6 0

Answer:

5.3Km/hr

Explanation:

Velocity=Displacement/Time

D=4km;T=0.75hr

V=4/0.75=5.33..

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A rocket in deep space has an empty mass of 220 kg and exhausts the hot gases of burned fuel at 2500 m/s. What mass of fuel is n
Scilla [17]

Answer:

Explanation:

Let fuel is released at the rate of dm / dt where m is mass of the fuel

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