EBK BASIC BIOMECHANICS
7th Edition
ISBN: 9780100409453
Author: Hall
Publisher: YUZU
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Chapter 12, Problem 7IP
Summary Introduction
To determine: The kinetic energy of skater A.
Summary Introduction
To determine: The kinetic energy of skater B.
Summary Introduction
To determine: The final velocity of combined mass.
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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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In terms of mass and acceleration, what is the equation for force?
Chapter 12 Solutions
EBK BASIC BIOMECHANICS
Ch. 12 - How much force must be applied by a kicker to give...Ch. 12 - A high jumper with a body weight of 712 N exerts a...Ch. 12 - What factors affect the magnitude of friction?Ch. 12 - If s between a basketball shoe and a court is...Ch. 12 - A football player pushes a 670-N blocking sled....Ch. 12 - Lineman A has a mass of 100 kg and is traveling...Ch. 12 - Prob. 7IPCh. 12 - A ball dropped on a surface from a 2-m height...Ch. 12 - A set of 20 stairs, each of 20-cm height, is...Ch. 12 - A pitched ball with a mass of 1 kg reaches a...
Ch. 12 - Identify three practical examples of each of...Ch. 12 - Prob. 2APCh. 12 - A 2-kg block sitting on a horizontal surface is...Ch. 12 - Explain the interrelationships among mechanical...Ch. 12 - Prob. 5APCh. 12 - A 108 cm, 0.73-kg golf club is swung for 0.5 s...Ch. 12 - A 6.5-N ball is thrown with an initial velocity of...Ch. 12 - Prob. 8APCh. 12 - Using the principle of conservation of mechanical...Ch. 12 - Prob. 10AP
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- a toy car rolls 10 meters (m) across the floor. it takes 5 seconds (s) to cross this distance. what is the speed of this car?arrow_forwardThe “mean-speed theorem” for calculating average velocity under constant acceleration, developed by Thomas Bradwardine and the Mertonian Calculators at Oxford University, is expressed algebraically as: density = weight/volume (m1)(v1) = (m2)(v2) C. (vm) = 1/2 (v0 + vf) s = (v0)(t) + 1/2 (a)(t2) velocity = distance/timearrow_forwardplease provide an example to solve for Velocity using the Michaelis-Menten Equation ?arrow_forward
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- Kepler’s third law can be stated mathematically as: velocity = distance/time (years)2 = (A.U.)3 S = vot + ½ (a) t2 vm = ½ (vo + vf) F = GM1M2/d2arrow_forwardUse the following information to answer questions 20 and 21. Assignment Booklet 4B Two cars, each with a mass of 1000 kg, are travelling in opposíte directionsn is car travelling to the right is travelling 30 m/s, and the car travelling to the lert is travelling 20 m/s. 1000 kg 30 m/s 1000 kg 20 m/s 20. What is the total momentum of the vehicles after they collicde? A. -50 000 kg-m/s B. 50 000 kg.m/s C. -10 000 kg.m/s D. 10 000 kg.m/s al ne 21. If the two vehicles collide and lock together, what is their velocity after the collision? A. -5 m/s Aon s quAua B. 5 m/s elg C. -10 m/s D. 10 m/s Return to page 70 of the Student Module Booklet and begin the Section 3 Review. os elomun ef et birov ort to solniedarrow_forwardWhich of the following components of Km is largest in magnitude? k2 O k-1 O k1 O k-2arrow_forward
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