Applied Physics (11th Edition)
11th Edition
ISBN: 9780134159386
Author: Dale Ewen, Neill Schurter, Erik Gundersen
Publisher: PEARSON
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Textbook Question
Chapter 4.1, Problem 1P
Find the average speed (in the given units) of an auto that travels each distance in the given time.
1. 150 mi in 3.0 h (in mi/h)
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During a concentric loading of the quadriceps muscle in the upper leg, an athlete extends his lower leg from a vertical position (see figure (a)) to a fully extended horizontal position (see figure (b)) at a constant angular speed of 45.0° per second. Two of the four quadriceps muscles, the
vastis intermedius and the rectus femoris, terminate at the patellar tendon which is attached to the top of the tibia in the lower leg. The distance from the point of attachment of the patellar tendon to the rotation axis of the tibia relative to the femur is 4.10 cm in this athlete.
a
b
(a) The two quadriceps muscles can exert a maximum force of 225 N through the patellar tendon. This force is applied at an angle of 25.0° to the section of the tibia between the attachment point and the rotation axis. What is the torque (in N⚫ m) exerted by the muscle on the lower leg
during this motion? (Enter the magnitude.)
N⚫ m
(b) What is the power (in W) generated by the athlete during the motion?
W
(c)…
Chapter 4 Solutions
Applied Physics (11th Edition)
Ch. 4.1 - Find the average speed (in the given units) of an...Ch. 4.1 - Find the average speed (in the given units) of an...Ch. 4.1 - Find the average speed (in the given units) of an...Ch. 4.1 - Find the average speed (in the given units) of an...Ch. 4.1 - Find the average speed (in the given units) of an...Ch. 4.1 - Find the average speed (in mi/h) of a racing car...Ch. 4.1 - While driving at 90km/h, how far can you travel in...Ch. 4.1 - While driving at 90km/h, how far (in metres) do...Ch. 4.1 - An automobile is traveling at 55 mi/h. Find its...Ch. 4.1 - An automobile is traveling at 22.0 m/s. Find its...
Ch. 4.1 - A semi-trailer truck traveling 100km/h continues...Ch. 4.1 - A flatbed truck travels for 3.85 hat 105 km/h. How...Ch. 4.1 - The average speed of a garbage truck is 60.0 km/h....Ch. 4.1 - A highway maintenance truck has an average speed...Ch. 4.1 - Find the velocity for each displacement and time....Ch. 4.1 - Find the velocity for each displacement and time....Ch. 4.1 - Find the velocity for each displacement and time....Ch. 4.1 - Find the velocity for each displacement and time....Ch. 4.1 - Find the velocity for each displacement and time....Ch. 4.1 - Find the velocity for each displacement and time....Ch. 4.1 - Mitwaukee is 121 mi (air miles) due west of Grand...Ch. 4.1 - Telluride, Colorado, is 45 air miles at 11 east of...Ch. 4.1 - In Problems 23-30, assume that the planes new...Ch. 4.1 - In Problems 23-30, assume that the planes new...Ch. 4.1 - In Problems 23-30, assume that the planes new...Ch. 4.1 - In Problems 23-30, assume that the planes new...Ch. 4.1 - In Problems 23-30, assume that the planes new...Ch. 4.1 - In Problems 23-30, assume that the planes new...Ch. 4.1 - In Problems 23-30, assume that the planes new...Ch. 4.1 - In Problems 23-30, assume that the planes new...Ch. 4.2 - All automobile changes speed as shown. Find its...Ch. 4.2 - All automobile changes speed as shown. Find its...Ch. 4.2 - All automobile changes speed as shown. Find its...Ch. 4.2 - All automobile changes speed as shown. Find its...Ch. 4.2 - All automobile changes speed as shown. Find its...Ch. 4.2 - All automobile changes speed as shown. Find its...Ch. 4.2 - A dragster starts from rest and reaches a speed of...Ch. 4.2 - A car accelerates from 25 mi/h to 55 mi/h in 4.5...Ch. 4.2 - A train accelerates from 10km/h to 110km/h 2 min...Ch. 4.2 - A plane a accelerates at 30.0 ft/s2 for 3.30 s....Ch. 4.2 - A plane a accelerates at 30.0 ft/s2 for 3.30 s....Ch. 4.2 - A rocket accelerates at 10.0 m/s2 from rest...Ch. 4.2 - A rocket accelerates at 10.0 m/s2 from rest...Ch. 4.2 - How long (in seconds) does it take for a rocket...Ch. 4.2 - What is the acceleration of a road grader that...Ch. 4.2 - What is the acceleration of a compactor that goes...Ch. 4.2 - How long (in seconds) does it take for a truck...Ch. 4.2 - How long (in seconds) does it take for a car...Ch. 4.2 - A bullcozer accelerates from rest to 3.03 m/s in...Ch. 4.2 - A pickup truck pulling a trailer accelerates at...Ch. 4.2 - The speed of a delivery van increases from 2.00...Ch. 4.2 - A go-cart roils backward down a driveway. We...Ch. 4.2 - A stock car is moving at 25.0 m/s when the driver...Ch. 4.2 - If the car in Problem 23 took twice as long to...Ch. 4.2 - If the car in Problem 23 was going twice as fast...Ch. 4.2 - If the car in Problem 23 was going twice the speed...Ch. 4.3 - Substitute in the given equation and find the...Ch. 4.3 - Substitute in the given equation and find the...Ch. 4.3 - Substitute in the given equation and find the...Ch. 4.3 - Substitute in the given equation and find the...Ch. 4.3 - Substitute in the given equation and find the...Ch. 4.3 - The average velocity of a mini-bike is 15.0 km/h....Ch. 4.3 - A sprinter starting from rest reaches a final...Ch. 4.3 - A coin is dropped with no initial velocity. Its...Ch. 4.3 - A front endloader accelerates from rest to 1.75...Ch. 4.3 - A mechanic test driving a cat that she has just...Ch. 4.3 - A rocket lifting off from earth has an average...Ch. 4.3 - The final velocity of a truck is 74.0 ft/s. If it...Ch. 4.3 - A truck accelerates from 85 km/h to 120km/h in 9.2...Ch. 4.3 - How long does it take a rock to drop 95.0 m from...Ch. 4.3 - An aircraft with a landing speed of 295 km/h lands...Ch. 4.3 - A ball is thrown downward from the top of a...Ch. 4.3 - A car is traveling at 70km/h. It then uniformly...Ch. 4.3 - A car is traveling at 60km/h. It then accelerates...Ch. 4.3 - A rock is dropped from a bridge to the water...Ch. 4.3 - A bullet is fired vertically upward from a gun and...Ch. 4.3 - A bullet is fired vertically upward from a gun...Ch. 4.3 - A rock is thrown down with an initial speed of...Ch. 4.3 - John stands at the edge of a deck that is 25.0 m...Ch. 4.3 - John stands at the edge of a deck that is 40.0 m...Ch. 4.3 - John is standing on a steel beam 255.0 ft above...Ch. 4.3 - Kurt s standing on a steel beam 275.0 ft above the...Ch. 4.3 - One ball is dropped from a cliff. A second bail is...Ch. 4.3 - A car with velocity 2.00 m/s at t = 0 accelerates...Ch. 4.3 - A truck moving at 30.0 Km/h accelerates at a...Ch. 4.3 - A bus accelerates from rest at a constant 5.50...Ch. 4.3 - A motorcycle stows from 22.0 m/s to 3.00 m/s with...Ch. 4.4 - Find the horizontal range for each projectile with...Ch. 4.4 - Find the horizontal range for each projectile with...Ch. 4.4 - Find the horizontal range for each projectile with...Ch. 4.4 - Find the horizontal range for each projectile with...Ch. 4.4 - Find the horizontal range for each projectile with...Ch. 4.4 - Draw a conclusion about range and angles based on...Ch. 4.4 - Part or military training involves aiming and...Ch. 4.4 - A faulty fireworks rocket launches but never...Ch. 4.4 - An outfielder throws a baseball at a speed of...Ch. 4.4 - A bearing rolls off a 1.40-m-high workbench with...Ch. 4.4 - A mechanics socket rolls off a 1.50-m-high bench...Ch. 4 - Velocity is a. the distance traveled per unit of...Ch. 4 - A large heavy rock and a small marble are dropped...Ch. 4 - One ball1s thrown horizontally while another is...Ch. 4 - At what launch angle with the ground does a...Ch. 4 - Where in a projectiles path would its speed be the...Ch. 4 - Explain your answer to Question 2. 2. A large...Ch. 4 - Explain your answer to Question 3. 3. One ball1s...Ch. 4 - Distinguish between velocity and speed.Ch. 4 - Is velocity always constant?Ch. 4 - Why are vectors important in measuring motion?...Ch. 4 - Give three familiar examples of acceleration.Ch. 4 - Distinguish among acceleration, deceleration, and...Ch. 4 - State the values of the acceleration due to...Ch. 4 - A boat travels at 17.0 mi/h for 1.50 h. How far...Ch. 4 - A commercial jet flies at 550 mi /h for 3000mi....Ch. 4 - A plane flies north at 215 km/h. A wind from the...Ch. 4 - A glider flies southeast (at 320.0) at 25.0 km/h....Ch. 4 - A runner starts from rest and attains 8 speed of 8...Ch. 4 - A race car goes from rest to 150 km/h with an...Ch. 4 - A sailboat has an initial velocity of 10.0 km/h...Ch. 4 - A skateboarder starts from rest and accelerates at...Ch. 4 - A plane has an average velocity of 500km/h How...Ch. 4 - A train has a final velocity of 110 km/h. It...Ch. 4 - A boulder is rolling down a hill at 8.00 m/s...Ch. 4 - A truck accelerates from rest to 120 km/h in 13 s....Ch. 4 - An airplane reaches a velocity of 71.0 m/s when it...Ch. 4 - An airplane accelerates at 3.00 m/s2 from a...Ch. 4 - A bullet is fired vertically upward and reaches a...Ch. 4 - A rock is thrown down with an initial speed of...Ch. 4 - A shot put is hurled at 9.43 m/s at an angle of...Ch. 4 - An archer needs to hit a bulls eye on a target at...Ch. 4 - Amy walks at an average speed of 1.75 m/s toward...Ch. 4 - A novice captain is pointing his ferryboat...Ch. 4 - Anette is a civil engineer and needs to determine...Ch. 4 - As a movie stunt coordinator, you need to be sure...Ch. 4 - As a newspaper delivery boy, Jason needs to know...
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