There are objects in space that have the same mass. one object is just outside of earth's atmosphere, and the other object is halfway between the earth and the moon. compare the gravitational forces acting on both objects. if the earth's moon were twice as far away from earth as it is now, how would the gravitational force between the earth and moon change? a) it would be the same. b) it would decrease by one half c) it would decrease two times d) it would decrease four times

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?

Aball of mass 0.3kg is released from rest at a height of 8m.how fast is it going when it hits the ground? accleration due to gravity is g=9.8m/s

Two positive charges are equal. which has more electric potential energy?