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Homework 17

# Homework 17 - lim(kl9356 Homework 17 Weathers(17104 This...

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lim (kl9356) – Homework 17 – Weathers – (17104) 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points a) Find the time it takes an object to hit the ground when it is dropped from a height of 67 using the model h = - 16 t 2 + s, where s is the initial height, and t is in sec- onds. Answer in units of sec. 002 (part 2 of 2) 10.0 points b) Find the time it takes an object to hit the ground when it is dropped from a height of 134 ft. 003 (part 1 of 2) 10.0 points Given: G = 6 . 67259 × 10 - 11 N m 2 / kg 2 Two hypothetical planets of masses 4 × 10 23 kg and 7 . 7 × 10 23 kg and radii 4 . 8 × 10 6 m and 6 . 1 × 10 6 m, respectively, are at rest when they are an infinite distance apart. Because of their gravitational attraction, they head toward each other on a collision course. When their center-to-center separation is 5 . 5 × 10 8 m, find their relative velocity. An- swer in units of m / s.

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Homework 17 - lim(kl9356 Homework 17 Weathers(17104 This...

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