Answered: A cyclist does work at the rate of 500…

A cyclist does work at the rate of 500 W while riding. How much force does his foot push with when he is traveling at 8.0 m/s?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 57P: Compare the work required to stop a 100-kg crate sliding at 1.0 m/s and an 8.0-g bullet traveling at...

See similar textbooks

Related questions

Q: Atruk has an engine power of 50 kN, what the power that makes the truck speed 80 km? O 2.11 Mw 1.21…

Q: How much work can a 6.0-hpmotor do in 3.0h?Express your answer to two significant figures and…

A: The expression for power is,

Q: Calculate the kinetic energy in Joule, of a car of mass 1500kg travelling at 90km/h.

Q: Calculate the kinetic energy in Joule, of a car of mass 1800kg travelling at 40km/h.

A: Recall KE=1/2mv^2 m=1800kg v=40km/hr=11.11m/s

Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…

A: The rate of doing work is called power.

Q: Your gasoline engine has a limited supply of gasoline, able to do 5000 J of work. If you weigh 800…

Q: A 0.8 kg paint bucket is falling at 6.0 m/s. How many Joules of kinetic energy does the bucket have?

Q: In a building, building materials are raised using an electric motor with a power consumption of…

Q: A 220-kg motorcycle is cruising at 14 m>s. What is the total work that must be done on…

Q: a 1000 kg sports car accelerates from zero to 25m/s in 7.5 seconds. What is the average power…

A: Mass, m = 1000 kgInitial velocity, u = 0 m/sFinal velocity, v = 25 m/sTime, t = 7.5 s

Q: A 0.075 frisbee is thrown with an initial speed of 12 m, and an initial height of 1.1 m, when it has…

A: Write the given values with the suitable variables. m=0.075 kgu=12 m/sh=1.1 mv=10.5 m/sH=2.1 m Here,…

Q: As a gasoline engine is running, an amount of gasoline containing 15,000 J of chemical potential…

Q: A 5.0 kg mass is falling from a height of 10.0 m with a speed of 2.0 m/a what is it's totally…

Q: *The 3,000lb race car is up and running again and slides into a wall at 150mph. What is the kinetic…

A: A body is said to be possessing kinetic energy if it has a velocity. The higher the velocity of the…

Q: Ruth is moving a heavy box a distance of 14 m across the floor of her bedroom. If she does 9000 J of…

A: total distance moved = 14 m work done = 9000 J time taken = 3 seconds

Q: Calculate the kinetic energy in Joule, of a car of mass 1500kg travelling at 105km/h.

A: Mass of car: M = 1500 kg Speed of car: v = 105 km/h = 29.1667 m/s

Q: A 900kg car is moving at 5 m.s. how much kinetic energy does it have?

A: The kinetic energy of the car can be given by KE=12mv2

Q: A force of 18 lb is required to hold a spring stretched 8 in. beyond its natural length. How much…

Q: A man is driving his 1100 kg car at 36 km/h on a straight free way. After accelerating for 30…

A: Given:mass of car m=1100 kgInitial velocity of car u=36 km/hr=36×518m/s=10 m/sFinal velocity…

Q: Catching a wave, a 74.6-kg surfer starts with a speed of 1.18 m/s, drops through a height of 1.80 m,…

A: The initial energy of the surfer is

Q: A 100-g ball is falling through syrup in a glass at a speed of 1.0 cm/s. How much work is done by…

A: Given, mass of ball: m=100 g=0.1 kg speed of ball: v=1.0 cm/s=0.01 m/s distance covered by ball:…

Q: A 0.75 N force of kinetic friction acts on a hockey puck as it slides on ice for 23.4 m. What is the…

A: The work done by a force is calculated by using the formula W=Fd , where F=0.75 N is the force of…

Q: A 73-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops…

Q: Calculate the kinetic energy in Joule, of a car of mass 1300kg travelling at 50km/h.

Q: A 1,452 kg sports car accelerates from rest to 27.1 m/s in 12.3 s. What is the average power output…

A: Given data: Mass of sports car is, m=1452 kg. Initial speed of car is, u=0 m/s…

Q: If the human body could covert a candy bar directly into work, how high could an 82 kg man climb up…

A: Given data: Mass (m) = 82 kg Energy (ΔE) = 1100 kJ Required: Height (h) and speed at the bottom

Q: A 100 kg weightlifter performs a lift called a clean and jerk, raising a 190 kg bar from the ground…

Q: How much kinetic energy will a 70 kg diver have when he reaches the water after jumping off a 5.0 m…

Q: A 4kg box is sliding across the floor with a kinetic energy of 107 J. After friction has done -30 J…

A: Given, Mass, m= 4kg, KE, KE= 107 J, and Frictional force, Ff=-30 J.

Q: A 20 kg child sits on a 4.3kg sled and slides down a 144 meter, 33 degree slope, to the nearest 0.1…

A: The initial height is The initial energy of the child and sled at the top is

Q: You carry a 7.0 kg bag of groceries 1.2m above the level floor at a constant velocity of 75 cm/s…

A: Here bag makes an angle 900 with normal. So work done W = F.d W = Fd cos 900

Q: Calculate the kinetic energy in Joule, of a car of mass 1400kg travelling at 90km/h.

A: Given, mass m=1400 kg velocity v=90 km/h

Q: A 2000 Kg car is moving at 54 km/hr behind a truck. In order to pass the track, the car changes its…

A: Given: mass of car, m = 2000 kg initial velocity, u = 54 km/h = 15 m/s final velocity, v = 72 km/h…

Q: A 10.0 kg bowling ball falls from a 5.0 m shelf. Just before hitting the floor, what will be its…

Q: How much work can a 1950 Watt motor do in 15 min? Express your answer in Joules.

Q: A 1500kg automobile accelerated from 10km/hr to 140km/hr. How much work in KJ does this require?

Q: How fast must a 2.7-g ping-pong ball move in order to have the same kinetic energy as a 145 baseball…

A: Given data: Mass of ball 1, m1=145 g=0.145 kg Velocity of ball 1, v1=39 m/s Mass of ball 2,…

Q: A bicyclist on a flat road expends energy at a rate of 80 W. How many Joules of energy are expended…

Q: It takes 3 s for 25 g car to go down a 10 degree incline for 1 m. ? How much work was done by…

Q: How much work must be done by frictional forces in slowing a 1000 g car the velocity from 400 cm/s…

A: Given data The mass of the car is m=1000 g=1 kg The initial speed is u=400 cm/s=4 m/s The final…

Q: A fireman of mass 80 kg slides down a pole. When he reaches the bottom, 4.2 m below his starting…

A: Given, Mass, m= 80 kg, height, h= 4.2 m, and speed, v=2.2 m/s.

Q: A 125kg student races upstairs with a vertical height of 4.0 m in 5.0 s to get to a class on the…

A: The expression for the power is,

Q: A 1 000-kg sports car accelerates from zero to 25 m/s in 7.0 s. What is the average power delivered…

A: The expression for velocity is,

Q: If a runner's power is 500 W as she runs, how much chemical energy does she convert into other forms…

A: Given data, Runner's power P= 500 W The runner runs for total time of, ∆t = 20 minutes = 20 x 60…

Question

A cyclist does work at the rate of 500 W while
riding. How much force does his foot push with
when he is traveling at 8.0 m/s?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

If you hold this textbook out at shoulder height and let go, at the instant you let go, does the book have potential energy? Kinetic energy?
Describe a situation in 4iich a force is exerted for a long time but does no work. Explain.
A 100 — kg man is skiing across level ground at a speed of 8.0 m/s when he comes to the small slope 1.8 m higher than ground level shown in the following figure. (a) If the skier coasts up the bill, what is his speed when he reaches the top plateau? Assume friction between the snow and skis is negligible. (b) What is his speed when he reaches the upper level if an 80 — N frictional force acts on the skis?
Coal is lifted out of a mine a vertical distance of 50 m by an engine that supplies 500 W to a conveyer belt. How much coal per minute can be brought to the surface? Ignore the effects of friction.
Suppose you are jogging at constant velocity. Are you doing any work on the environment and vice versa?
When released, a 100-g block slides down the path shown below, reaching the bottom with a speed of 4.0 m/s. How much work does the force of friction do?
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance?
What is the dominant factor that affects the speed of an object that started from rest down a frictionless incline if the only work done on the object is from gravitational forces?
Compare the work required to stop a 100-kg crate sliding at 1.0 m/s and an 8.0-g bullet traveling at 500 m/s.
The man of the preceding problem consumes approximately 1.05107J (2500 food calories) of energy per day in maintaining a constant weight. What is the average power he produces over a day? Compare this with his power production when he runs up the stairs.
A particle moving in the xy -plane is subject to a force F(x,y)=(50Nm2)(xi+yj)( x 2 + y 2 )3/2 , where x and y are in meters. Calculate the work done on the particle by this force, as it moves in a straight line from the point (3 in, 4 m) to the point (8 in, 6 in).
(a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running at 10.0 m/s? (b) Discuss how the larger energies needed for the movement of larger animals would relate to metabolic rates.