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I just want to be done :C

I just want to be done :C-example-1
User BudiDino
by
8.4k points

1 Answer

1 vote

Answer:

187.5 seconds

Explanation:

The initial speed of the bullet is 3000 ft/s, so v = 3000.

At first, the bullet is at ground level, so h = 0.

The bullet is fired up, goes up to a maximums height, and then starts falling until it reaches ground level again at h = 0.

h = vt - 16t²

0 = 3000t - 16t²

16t² - 3000t = 0

8t(2t - 375) = 0

8t = 0 or 2t - 375 = 0

t = 0 or 2t = 375

t = 0 or t = 375/2 = 187.5

The height of the bullet is 0 ft at t = 0 seconds (when it is fired) and at t = 187.5 seconds when if falls on the ground.

Answer: 187.5 seconds

User Gloire
by
8.6k points

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