A 50 kg object falls freely for a distance of 10 m near the Earth's surface. Which of the following is the KE gained by the object as it falls?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

What will a positive and a negative charge do if they are separated from each other?

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?