BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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Chapter 15, Problem 7AP
Based on your knowledge of the action of fluid forces, speculate as to why a properly thrown boomerang returns to the thrower.
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According to Jean Buridan’s equation, the momentum or “impetus” of an 8 kilogram mass moving at 48 meters per second would be:
192 kilogram-meters per second
384 kilogram-meters per second
576 kilogram-meters per second
768 kilogram-meters per second
960 kilogram-meters per second
A scientist was investigating if differences in the frictional work performed on a model car can change
depending on its mass (in grams) and whether the car moves up or down an inclined plane. They decided to
measure the amount of frictional force experienced by the model car and the distance it traveled in meters.
The scientists were able to evaluate the frictional work using the following data.
Mass (g)
Distance (m) Force
Work Done by Friction (J)
car going up the incline
100
39
0.063
2.457
car going down the incline 70
39
0.2309 ?
It is known that the relationship between force and distance determines the work done by friction (W+).
W₁ = fd
Wf work done by friction
f = force
d = distance
Question:
How much work done by friction was exerted on the car as it moved down the inclined plane?
You may use a calculator.
1
2.457
9.005
11.46
16.16
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A study was done to find if different tire treads affect the braking distance of a car.
What is the independant and dependant variable and constant of the sanario?
Chapter 15 Solutions
BASIC BIOMECHANICS
Ch. 15 - Prob. 1IPCh. 15 - A cyclist is riding at a speed of 14 km/hr into a...Ch. 15 - A skier traveling at 5 m/s has a speed of 5.7 m/s...Ch. 15 - Prob. 4IPCh. 15 - Prob. 5IPCh. 15 - Prob. 6IPCh. 15 - Prob. 7IPCh. 15 - What strategy can people use to improve their...Ch. 15 - What types of individuals may have a difficult...Ch. 15 - Prob. 10IP
Ch. 15 - A cyclist riding against a 12-km/hr headwind has a...Ch. 15 - A swimmer crossing a river proceeds at an absolute...Ch. 15 - Prob. 3APCh. 15 - A scuba diver carries camera equipment in a...Ch. 15 - A 50-kg person with a body volume of 0.055 m3...Ch. 15 - A 670-N swimmer oriented horizontally in...Ch. 15 - Based on your knowledge of the action of fluid...Ch. 15 - Explain the aerodynamic benefits of drafting on a...Ch. 15 - Prob. 9APCh. 15 - Explain why a curveball curves. Include a...
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