1. Find the change in the force of gravity between two objects when both masses are doubled and the distance between them is also doubled. 2. Calculate the force of gravity between Earth (  kg) and...

1. Find the change in the force of gravity between two objects when both masses are doubled and the distance between them is also doubled.

2. Calculate the force of gravity between Earth ( kg) and the Sun ( kg). The average distance between the two is
 m.

Q165;

Students in a lab roll a steel ball off the edge of a table and measure its speed to be 4.0 m/s. They also know that if they simply dropped the ball from rest off the edge of the table it would take 0.5 s to hit the floor. How far from the bottom of the table should they place a small piece of paper so that the ball will hit it when it lands?