Exercise 3. An elevator is ascending with constant velocity vo = 5 m/s. At 30 m above the ground, the lifting chain cracks and the elevator descends, after a short remaining time of ascending, to the ground. a) At what time does the elevator hit the ground, when the chain cracks at to = Os? b) What is the striking velocity? c) What is the total height of fall?
Exercise 3. An elevator is ascending with constant velocity vo = 5 m/s. At 30 m above the ground, the lifting chain cracks and the elevator descends, after a short remaining time of ascending, to the ground. a) At what time does the elevator hit the ground, when the chain cracks at to = Os? b) What is the striking velocity? c) What is the total height of fall?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Exercise 3
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Exercise 3. An elevator is ascending with constant velocity vo = 5m/s. At 30 m above
the ground, the lifting chain cracks and the elevator descends, after a short remaining time
of ascending, to the ground.
FI
a) At what time does the elevator hit the ground, when the chain cracks at to = 0s?
b) What is the striking velocity?
c) What is the total height of fall?
F2
Exercise 4. During a track racing, a kangaroo is doing jumps with a length of lo = 6 m
and a height of ho= 1.8 m. What is the constant horizontal velocity vn of the kangaroo?
Hint: Assume that the jumps of the kangaroo have the shape of projectile motion.
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