College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter1: Introduction: The Nature Of Science And Physics
Section: Chapter Questions
Problem 23PE: If a marathon runner averages 9.5 mi/h, how long does it take him or her to run a 26.22-mi marathon?
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Hi, I don't know if I was given enough or have too much uneccesary information to solve this problem, but here it is.
An 80 kg guy is running on a flat surface at a velocity of 10 m/s. He gets on a 4 kg skateboard that is sitting at rest at the top of a 45-degree inclined plane (see drawing). If the time taken to travel from point A to point B is 6 seconds and only gravitational acceleration is acting on the guy/skateboard unit, find
a) the velocity of the unit when t = 3 seconds;
b) the height h at point A.
I'm also not sure which part should be solved first. Thanks.
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