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Answers (3)
A=m(g+a)h=75(9.8+1.2)*8.85=7,301.25Joules
f'(x)=(√(x))'*(sin(pix))+(sin(pix))'*(√(x))=1/2*(x)^(-1/2)*(sin(pix))+cos(pix)*(pi)*(√(x)) 2) f'(x)=(1/2(cosx+sinx)^(-1/2))(cos(x)+sin(x))'=(1/2(cosx+sinx)^(-1/2)*(-sin(x)+cos(x))
a=(v2-v1)/t a=(20-8)/4=3m/s^2
