Answered: What is the magnitude of the…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter3: Two-dimensional Kinematics

Section: Chapter Questions

Problem 52PE: Bryan Allen pedaled a human-powered aircraft across the English Channel from the cliffs of Dover to...

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1. What is the magnitude of the displacement of a car that travels 7.6 mi east and then 8.9 mi north? One mile is 1609.34 meters.

2. A car that travels at 8.9 km/hr for 2.0 hrs, at 3.6 km/hr for 1.0 hr and at 2 km/hr for half an hour. What is its average speed?

3. If the ball was kicked from ground gaining a velocity of 87 m/s at 5.9 degrees from the horizontal. Find the velocity of the ball when it reached maximum height.

Select one:

a. 86.5391 m/s

b. 8.9430 m/s

c. 9.81 m/s

d. 0 m/s

4. In a construction site, a heavy hollow block falls down from a height of 63m above the ground. Unfortunately, there is a man 6ft height tall right below the incident. As to what maximum time should the man react as to safely move away from the falling block?
1m = 3.2808ft

5. A hiker goes 6 km, 67 degrees east of north then changes direction and goes 5 km, 34 degrees west of north. How far is he from the starting point?

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