A person drops a brick from the top of a building. The height of the building is 400 m and the mass of the brick is 2.00 kg. What will be the speed of the brick right before it touches the ground? Use g = 10.0 m/s2

Question

Barr

Physics

27 July, 04:25

A person drops a brick from the top of a building. The height of the building is 400 m and the mass of the brick is 2.00 kg. What will be the speed of the brick right before it touches the ground? Use g = 10.0 m/s2

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Answers (1)

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Ansley Jenkins · Answer 1

- - It takes the brick 8.9 seconds to reach the ground.

- - At the instant of the "splat", it's falling at 89 m/s.

- - The mass doesn't matter. If not for air resistance, every object

would fall at the same rate. The answer is the same for a feather,

a rubber chicken, a brick, or a school bus.