What is the gravitational force between two 20-kg iron balls separated by a distance of .9 m? A rock is thrown off a tall cliff with a vertical speed of 25 m/s upward and a horizontal speedod 30 m/s. What will these speeds be 3s later? Inthe law of universal gravitation the force as the mass increases and as the distance increases. A bowling ball rolls off the edge of a giants table at 15 m/s. If it takes4s for the ball To hitthe ground. What is the height of the table?