KingDarius KingDarius

18-03-2017
Physics

contestada

A rock at rest falls off a tall cliff and hits the valley below after 3.5s. What is the rocks velocity as it hits the ground

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Аноним Аноним

18-03-2017

t = 3.5 secs

Velocity (v) = g * t = 10 m/s^2 * 3.5 sec = 35 m/s

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padawan padawan

18-03-2017

v = u + at
u=0(rest) ; a=gravitational acc(g)=10
v = 0 + 10(3.5) = 35m/s

Answer Link

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