1. Final Examination 2019, Question 16 The diagrams show the mass and weight of four objects (A, B, C and D) on the Earth, Earth’s Moon, Jupiter and Venus. Earth
Earth’sMoon A 8kg B 3kg 1kg C 80 N :Fig. 28.13
a. Which object, A, B, C or D, has the smallest mass? b. How can you tell that the force of gravity is less on Venus than it is on the Earth?
c. During the Apollo 15 mission to the Moon in 1971, astronaut David Scott conducted the famous hammer and feather experiment. The hammer and feather were dropped at the same time from the same height and hit the surface of the Moon at the same time. A hammer falls much faster on Earth than it does on the Moon. Explain why.