A worker drops a wrench from the top of a tower 92.6 m tall. What is the velocity when the wrench strikes the ground? The acceleration of grav - ity is 9.81 m/s2. Round to the nearest hun - dredth place

Question

Dickerson

Chemistry

4 May, 12:08

A worker drops a wrench from the top of a tower 92.6 m tall. What is the velocity when the wrench strikes the ground? The acceleration of grav - ity is 9.81 m/s2. Round to the nearest hun - dredth place

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Cristofer Eaton · Answer 1

Assuming the wrench was originally at rest (u=0 m/s).

height = 92.6 m = s; g = 9.81 m/s2

s = (v^2-u^2) / 2g

Therefore, v=sqrt (2 * g * s)

v = sqrt (2 * 9.81 * 92.6) m/s

v = 42.62 m/s