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If a lead ball is dropped from a tall tower, how fast will the ball be moving after dropping for 3 seconds? for 5 seconds? How tall must the tower be for the ball to hit the ground after 5 seconds? |
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If an astronaut on Earth can make a vertical jump of 2.5 ft while wearing his spacesuit and gear, how far will he jump on the Moon? |
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Jupiter's moon Callisto orbits at a distance of 1.88 million kilometers. Its orbital period is 16.7 days. Find the mass of Jupiter. (Assume Callisto's mass is negligible compared with the mass of Jupiter.) |