1. Martha (50 kg) is attracted to Stewart (70 Kg) who sits 4 m away. What is the
gravitational attraction between them? G=6.67 x 10-11
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2.
Stewart (70 kg) is attracted to Ms. Little (60 Kg) who sits 2 m away. What is the
gravitational attraction between them?
3.
Under the Big Top elephant, Ella (2500 kg), is attracted to Phant, the 3,000 kg
elephant. They are separated by 8 m. What is the gravitational attraction between
them?
4.
Mars is 7.83 x 1010 m from planet earth. The planet Earth is 5.98 x 1024 Kg while
Mars has a mass of 6.42 x 102 kg. What is the gravitational attraction between the
two planets?

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?