Suppose you drop a 10-pound weight and a 5-pound weight on the Moon, both from the same height at the same time. What will happen?
Both will hit the ground at the same time.
Suppose you kick a soccer ball straight up to a height of 10 meters. Which of the following is true about the gravitational potential energy of the ball during its flight?
The ball's gravitational potential energy is greatest at the instant when the ball is at its highest point.
If an object's velocity is doubled, its momentum is
doubled
If your mass is 60 kg on Earth, what would your mass be on the Moon?
60kg
The force of gravity is an inverse square law. This means that, if you double the distance between two large masses, the gravitational force between them
weakens by a factor of 4.
Newton's Second Law of Motion tells us that the net force applied to an object equals its ________.