Work and Energy4.At her highest point, a girl on the swing is 6.5ft. Above the ground, and at her lowest point, sheis 2.8ft, above the ground. What is her maximum velocity (fps)?5.What is the average horsepower required to raise a 200kg box to a height of 23m over a periodof 3 minutes?6.An arrow with a mass of 78g is fired from a bow whose string exerts an average force of 142 Non the arrow over a distance of 650 mm. What is the speed of the arrow as it leaves the bow?

Part (4):The highest point of the girl is 6.5 ft from the ground.The lowest point of the girl is 2.8…

Answered: 4. At her highest point, a girl on the…

4. At her highest point, a girl on the swing is 6.5ft. Above the ground, and at her lowest point, she is 2.8ft, above the ground. What is her maximum velocity (fps)?

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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Question

Work and Energy
4.
At her highest point, a girl on the swing is 6.5ft. Above the ground, and at her lowest point, she
is 2.8ft, above the ground. What is her maximum velocity (fps)?
5.
What is the average horsepower required to raise a 200kg box to a height of 23m over a period
of 3 minutes?
6.
An arrow with a mass of 78g is fired from a bow whose string exerts an average force of 142 N
on the arrow over a distance of 650 mm. What is the speed of the arrow as it leaves the bow?

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