Forum 3

·       One of your friends says that astronauts in orbit are weightless because they are beyond the pull of Earth’s gravity. Do you agree with your friend?

·       An astronaut lands on a planet that has the same mass at the Earth but twice the diameter. How would the weight of the astronaut differ from the weight on Earth?

·       If a piece of an airplane suddenly becomes detached during flight, it will crash to Earth. Would it happen the same to a piece of satellite in orbit?

·       When a satellite is placed into a higher orbit, what happens to its period?