Lighting McQueen now has a velocity of 30 m/s. He starts to slow down at decelerates at 3.0 m/s for the next 5.0 seconds. What distance does Lighting
McQueen cover during time time?

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?