Each soccer player can run at a speed of 7.5 m/s to kick a ball. a player can kick a stationary ball giving it a speed of 5 m/s. explain how can 5 soccer players send a ball forward with a speed of 192.5 m/s or 693 km/h, ignoring any air resistance (for example, assuming this is done on the moon). include a diagram with your explanation.

Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?