Basic Biomechanics
7th Edition
ISBN: 9780073522760
Author: Susan J Hall
Publisher: McGraw-Hill Education
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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
Based on the acceleration in the above ball rolling down an inclined plane (with vo = 0 meters per second), how far would it have traveled along the inclined plane in the first six seconds of rolling?
9 meters
16 meters
25 meters
36 meters
49 meters
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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Chapter 12 Solutions
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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- In terms of mass and acceleration, what is the equation for force?arrow_forwardThe momentum or “impetus” of a 12 kilogram mass moving at 7 meters per second can be stopped completely by a direct collision with a 3-kilogram mass moving at a velocity of: 14 meters per second 28 meters per second 36 meters per second 63 meters per second 84 meters per secondarrow_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_forward
- Using the above “mean-speed theorem”, calculate the average velocity of a car with constant acceleration from 0 km/hour (initial speed) to 80 km/hour (final speed) over a 5-minute period of time. average velocity over 5 minutes = 16 kilometers/hour average velocity over 5 minutes = 20 kilometers/hour average velocity over 5 minutes = 24 kilometers/hour average velocity over 5 minutes = 32 kilometers/hour average velocity over 5 minutes = 40 kilometers/hourarrow_forwardSuppose as astronaut has landed on Mars. Fully equipped, the astronaut has a mass of 130 kg, and when the astronaut gets in scale, the reading is 477 N. What is the acceleration due to gravity on Mars?arrow_forwardWhen Galileo Galilei pushed a ball down an inclined plane, it had an initial velocity (vo) of 4.0 meters per second (time = 0 seconds) and a final velocity (vf) of 10.0 meters per second (time = 2 seconds). How far did the ball travel along the inclined plane in these 2 seconds? 14 meters 20 meters 28 meters 40 meters 84 metersarrow_forward
- When Galileo Galilei rolled a ball down an inclined plane, it traveled 1.0 meters in the first second, and a total of 4.0 meters in the first two seconds. What was its acceleration on this inclined plane? 2.0 meters per second2 3.0 meters per second2 4.0 meters per second2 5.0 meters per second2 6.0 meters per second2arrow_forwardplease provide an example to solve for Velocity using the Michaelis-Menten Equation ?arrow_forwardThe “mean-speed theorem” for finding average velocity under constant acceleration, proposed by the Oxford Calculators, and demonstrated geometrically by Nicole Oresme, is expressed algebraically as: density = weight/volume (m1)(v1) = (m2)(v2) (vm) = 1/2 (v0 + vf) s = (v0)(t) + 1/2 (a)(t2) velocity = distance/timearrow_forward
- You have measured the following data for enzyme X. Substrate Vo concentration (micromolar (mM) Isec) 0.05 10 0.1 60 0.5 175 1 250 350 490 10 492 20 494 50 499 100 498 200 498arrow_forwardWhat is the relationship between Net force, mass and acceleration. Newton’s second law of motion?arrow_forwardWhen Galileo Galilei rolled a ball down an inclined plane, it traveled 2 meters in the first second, and a total of 8 meters in the first two With vo = 0, what was its acceleration on this inclined plane? 0 meter per second2 0 meters per second2 0 meters per second2 0 meters per second2 0 meters per second2arrow_forward
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