Superman lived on another planet where the acceleration due to gravity is 23.6 m/s2. If a woman falls from a building that is 88.3 m tall, how long does he have to save her before she hits the ground?

Question

Physics

Tristin Mckay

2 February, 10:41

Superman lived on another planet where the acceleration due to gravity is 23.6 m/s2. If a woman falls from a building that is 88.3 m tall, how long does he have to save her before she hits the ground?

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Answers (1)

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Edwin Graves · Answer 1

Acceleration due to gravity = 2.6m/s²

Length of building = d = 88.3m

Time he needed before she hits the ground = ?

we can find the time by using the formula;

D = 1/2at²

Now putting the value;

88.3 = (1/2) a t ²

88.3 = 1/2 x 23.6 x t ²

t² = 88.3 / 11.8

= 7.48

t = 2.735 seconds