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NNooob
Questions and answers by visitors named
NNooob
Answers (2)
a/ V=√2gh V=√(2×9.8×4.5) V=9.39 b/=> K.E= (mv^2)/2 => K.E= (4.2 ×〖120〗^2)/2 => K.E= 30240 J => K.E= 30.2kJ c/ average force= (35×9.8×2)/0.01 ave.f=68600N Ave.f= 68.6 KN
V=√2gh V=√(2×9.8×4.5) V=9.39 m/s
