c. Slok and his father are sitting at the distance of 5m on a seasaw. His father is at the distance of 2m from the fulcrum and Slok weighs 20 kg. If they are balancing the seasaw, find the weight of his father.​

Aregular polygon has angkes of size 150° each. how many side has the polygon

How many atoms of nitrogen are in the chemical formula ni(w on

Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?