Anonynous

A 50kg boy runs up the steps to the third floor of height 10.5m in 45s.While at the third floor,the boy drpos a 0.25kg ball and strike the ground. 1)calculate the rate of work done 2)by using the work-energy theorem,calculate the speed of the ball just be...

Don't cheat Brilliant math like this. Solve it yourself

Do the math yourself!!! Stop cheating!!!

I don't know if you'll see this but for a: V=pi times the integral from 0 to 1.13569 of [(1+sin(2x)-pi)^2-(e^(x/2)-pi)^2] dx I got -4.204 and i don't think it should be negative. And i still am not sure about B. How do i change the bounds,

I got .429 u^2 for A. I don't understand your hint for B..

I replied to those ones again

P=W/t =(Fscos theta)/t =Fvcos theta