A ball is thrown vertically upwards from the edge of a rooftop of a tall building. It passed a point 50 m below the rooftop after 5 s it was thrown. Determine the initial velocity of the ball

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd question 6 options: 3000 joules 30 joules 320 joules 3200 joules

The human body stores chemical energy from digested food. some of the chemical energy is converted into mechanical energy when the body moves. which statement best supported by this information