Recent content by BMW25

two question important ! 1) A hollow ball is rolling along a horizontal surface at 3.4 m/s when it encounters an upward incline. If it rolls without slipping up the incline, what maximum height will it reach? h= ...meter 2) A solid 2.4 kg sphere is rolling at 6.6 m/s . Find (a) its...

thnx dude for your post. but could you pls explain a little bit more for me?

A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, it explodes into two equal-mass fragments. One reaches the ground t1= 2.51s after the explosion. When does the second reach the ground? t= ...?? logiclly, it is 2.51 s also ...but I don't know. so...

new problem! A pumped-storage reservoir sits 136 m above its generating station and holds 9.0×10^9 kg of water. The power plant generates 346 MW of electric power while draining the reservoir over an 6.9 h period. What fraction of the initial potential energy is lost to nonconservative...