a 6.0kg concrete block is dropped from the top of a tall building. the block has fallen a distance of 55 meters and has a speed of 30 meters per srcond when it hits the ground
1) at the instant the block was released what was the gravitational potenetial energy with respect to the ground?
pe = mgh so 6kg x 9.81m/s2 x 55m = 323 j
2)calculate the kinetic energy of the block at the point of impact?
ke = 1/2mv2 so 6kg x 30m/s2 divided by 2 = 2700 j
3) how much mechanical energy was lost by the block as it fell?
how can i find the energy lost do i subtract the kinectic with the potential
4) explain what happened to the mechanical energy that was lost by the block?
how can i explain how the energy was lost was it because it was falling?
1) at the instant the block was released what was the gravitational potenetial energy with respect to the ground?
pe = mgh so 6kg x 9.81m/s2 x 55m = 323 j
2)calculate the kinetic energy of the block at the point of impact?
ke = 1/2mv2 so 6kg x 30m/s2 divided by 2 = 2700 j
3) how much mechanical energy was lost by the block as it fell?
how can i find the energy lost do i subtract the kinectic with the potential
4) explain what happened to the mechanical energy that was lost by the block?
how can i explain how the energy was lost was it because it was falling?