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3 years ago

Suppose a ball is dropped from a building. What is the change of velocity between the first and fifth seconds of its flight

Physics

1 answer:

Advocard [28]3 years ago

4 0

Answer: 39.2m/s

Explanation:

Due to the free falling body, the acceleration of the ball is 9.8 m/s^2, and its initial velocity is 0 m/s.

V(t) = g*t

The change of velocity from t=1 to t=5:

Delta V = 9.8*(5-1) = 39.2 m/s

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3 years ago

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3 years ago

A boy carries a 50 N box up a flight of stairs 10-m high. How much potential energy has the box gained?

almond37 [142]

Answer:

Potential energy, P = 500 J

Explanation:

We have,

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3 years ago

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Explanation:

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3 years ago