You throw a basketball by exerting a force of 20 newtons. According to Newton's third law, there is another 20 -newton force created in the opposite direction. If there are two equal forces in opposite directions how does the ball accelerate ?

What does the law of conservation of mass state?

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?

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?