Homework Answers
total energy at all places remains same
energy at top = energy at bottom
0.5mv^2 + mgh1 = 0.5mv2^2
0.5*11^2 + 9.8*17 = 0.5*v2^2
v2 = 21.3 m/s
so it hits the ground with 21.3 m/s
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