Which unit would be most
suitable for its scale?

Arescue plane flying horizontally at spots a survivor in the ocean directly below and releases an emergency kit with a parachute. because of the shape of the parachute, it experiences insignificant horizontal air resistance. if the kit descends with a constant vertical acceleration of, how far away from the survivor will it hit the waves?

If the speed of a particle triples ,by what factor does its kinetic energy increase?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.