Solve the problem below Astronaut training. Astronauts and test pilots experienc

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Solve the problem below

Astronaut training. Astronauts and test pilots experience extreme accelerations lasting for very short periods. NASA has been studying the effects of such accelerations. In 1954, one test subject was brought to rest in a water trough from a horizontal velocity of 286 m/s over a distance of 112.7 m. Assume constant acceleration and a mass of 77.0 kg. What net force was acting during the slow-down? Express your answer in newtons. Express your answer to two significant figures and include the appropriate units. What net force was acting during the slow-down? Express your answer as a multiple of the subject's weight. Express your answer to two significant figures and include the appropriate units. how much time did this force act? Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

A. 2ad = v^2
a = 286^2 / 2x112.7   = - 362.89 m/s2
F = ma = 27942.73 N

B. 2ad = v^2
a = 286^2 / 2x112.7   = -362.89 m/s2
F = ma = 27942.73 N

C. v = u +at
0 = 286 - 362.89 x t
t =0.788 sec

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