A 5-kg box slides 10 m diagonally down a frictionless ramp inclined at 45°. At the bottom of the ramp, it slides on a rough horizontal concrete floor with a coefficient of friction of 0.6.

- Calculate the velocity of the box when it reaches the bottom of the ramp.

- Calculate the kinetic energy of the box at the bottom of the ramp.

- How far does the box travel on the concrete before coming to a complete stop?

- How much time does it take to travel the distance in the previous question?