A woman stands on a roof of a 75m high building. She leans over the edge and throws a ball vertically upwards. The ball hits the ground after 5s. Calculate the balls maximum height

Which one of the following research methods can show cause and effect

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

Which system of units is used by only a small number of countries in the world, including the u.s.