A man stands on a crane and throws a water balloon down at at 21 m/s. He finds that it takes 2.4s for the balloon to hit the ground. How fast is the water balloon travelling when it hits the ground?

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Answer 1 · 2018-08-10T02:09:17

Water balloon will hit the ground at #color(purple)(44.52 m/s^2#

#u = 21 m/s, t = 2.4 sec, g = 9.8 m/s^2#

#color(red)(v = u + a t = u + g t#

#v = 21 + 9.8 * 2.4 = 21 + 23.52 = 44.52 m / s#