How does the momentum of a 75 kilogram stationary football player compare with that of a 70 kilogram player moving at a velocity of 6 meters/second?

A1kg cart slams into a stationary 1kg cart at 2 m/s. the carts stick together and move forward at a speed of 1 m/sl. determine whether kinetic energy was conserved in the collision. use the law of conservation of energy to explain the collision

Rohit is trying to tune an instrument

For which pair of objects would adding the same a