Question #d1a37

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Question #d1a37

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Answer 1 · 2017-10-01T21:44:40

I got #55.6m#

Explanation:

I would impose that the initial velocity is zero (....drops) so I use the relationship:
#v_f^2=v_i^2+2a(y_f-y_i)#
Where:
#v_i=0# the initial velocity;
#y_f=0#
#g=-9.8m/s^2#
#v_f=33m/s#
So we get:
#33^2=0^2-2*9.8(0-y_i)#
#1089=19.6y_i#
So:
#y_i=1089/19.6=55.56~~55.6m#

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Question #d1a37

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