A small block is at the top of a frictionless track. The track slopes down, runs horizontally and then ends in a spring attached to a stop. The block is released, slides down the track and compresses the spring. How much is the spring compressed before it springs back and reverses the direction of the block? (Block mass = .035 kg, track height = 0.78 m, k= 380 N/m).

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.