physics homework

Question

A wrench falls out of the gondola of a balloon that is 540 m above the ocean.

Assuming negligible air resistance, what was the wrench’s speed as it hit the water? The acceleration of gravity is 9.8 m/s2 .

Answer in units of m/s.

Answer 1

h = 540 m; vo = 0; g = -9.8 m/s/s

v²f = v²o + 2ah = 0 + 2(-540)(-9.8) = 10584

vf = sqrt 10584 = 103 m/s