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A girl throws a ball upwards. The ball as a mass of 0.20 kg and it leaves her hand with a speed of 8.0 m/s. How high will it rise?

By the way, the answer is 3.2 m.

1 Answer
1s2s2p
Apr 26, 2018

Based on your answer given, I'll assume you have #g=10ms^-2#

Loss of kinetic energy = gain in gravitational potential energy
#downarrow1/2mv^2-=uparrowmgDeltah#

#Delta(mgDeltah)=Delta1/2mv^2#
#Deltah=v^2/(2g)=8^2/(2*10)=64/20=3.2m#

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