Answered: Suppose a 75-kg sprinter accelerates…

Suppose a 75-kg sprinter accelerates from rest to 12 m/s in 3.15 s. 1. What is the power output, in watts, of the sprinter? p= 2. What is the power output, in horsepower, of the sprinter? p=

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 45PE: (a) What is the power output in watts and horsepower of a 70.0-kg sprinter who accelerates from rest...

See similar textbooks

Related questions

Q: 8. A circular loop of radius 0.3cm lies parallel to a much bigger circular loop of radius 20cm. The…

A: Step 1:A field due to current loop 1 at an axial point,B1=2(d2+R2)3/2μ0I1R2Flux linked with…

Q: A motorist is traveling at 18.0 m/s when he sees a deer in the road 38.0 m ahead. (a) If the maximum…

A: Step 1:Given:The initial velocity of the motorist: v0=18.0 m/sThe distance between the deer and the…

Q: Activity 2: Manufacturing Ware You can do this part in two different ways. Either use a kitchen…

A: Command/Code for Average (in spreadsheet): =AVERAGE(A1:A20) Data should be in A1:A20Command/Code for…

Q: How many yards are there in a 400m track? Show all work please.

A: We know that, 1 metre =1.09361 yards To convert length in meters to yards, multiply the length (in…

Q: Two long straight parallel lines of charge, #1 and #2, carry positive charge per unit lengths of λ1…

A: The problem is asking us to find the locus of points where the electric field is zero. This will be…

Q: Don't use chat gpt It Chatgpt means downvote

A: Step 1:Given:The height of the object: h1=2.1cmThe object distance from the first lens…

Q: 2) Which expression is false concerning the vectors shown in the sketch? B A A+B+C=0 b. A² + B² = C²…

Q: Two very large, nonconducting plastic sheets, each 10.0 cm thick, carry uniform charge densities 01,…

A: Step 1:

Q: Three identical blocks connected by ideal (massless) strings are being pulled along a horizontal…

Q: TACTICS BOX 4.1: Finding the acceleration vector. To find the acceleration between velocity Vi and…

Q: MoIow a E(s, t) = sin(wt) In 2π (²) 2. (a) Find the displacement current density Ja. (b) Integrate…

A: 01. Given informationThe electric field for a current-carrying straight wire…

Q: Determine the total increase in length of a cylindrical rod with constant cross-sectional area S,…

A: thank you

Q: The position x of a bowling ball rolling on a smooth floor as a function of time t is given by: x(t)…

A: The given equation is x(t) = vot + xo, where vo = 2.5 m/s and x0 = -5.0 m. This equation describes…

Q: PHY 110 Conceptual Physics Conservation of Energy 4. A football (m=0.4 kg) is kicked from ground…

A: if you have any doubt, please mention in the comments.

Q: Don't use chat gpt It

A: Problem 1Step 1:Given:The charge on the first particle: q1=50 mCThe charge on the second particle:…

Q: Vector S has a magnitude of 8 units and makes an angle of 46 degrees with respect to the positive x…

A: Given: Vectors S = 8 units at angle 46o with the positive x axis. T = 6 units at an angle 36°…

Q: Don't use chat gpt

A: Key references:Biology

Q: If An airplaine is controlled to move vertically downward from a given height of at a speed of 1…

A: Known:Initial conditions: The airplane is moving vertically downward at a speed of 1 m/s before…

Q: Don't use chat gpt

A: Detailed explanation:

Q: I need help with this problem and an explanation for the solution described below. (University…

A: In physics, vectors are mathematical objects used to represent physical quantities that have both…

Q: What was the magnitude of the average acceleration of the driver during the collision? Express the…

A: Approach to solving the question:Kinematic equation of motionDetailed explanation:

Q: © Macmillan Learning In both cases shown, a box is sliding across a floor with the same coefficient…

A: Kinetic friction is the force that opposes the motion of an object when the object is moving. It is…

Q: Don't use ai i will report you answer solve it as soon as possible with proper explanation

Q: The capacitors in the Figure (Figure 1) are initially uncharged and are connected, as in the…

A: Step 1:Step 2:

Q: How do I plot the position, velocity, and acceleration graph

Q: Activity 3- Data Table 2: Measurement of Circles Item Diameter D Circumference C Description (mm)…

A: The data presented can be tabulated using Microsoft Excel. Also, we can see the linear equation of…

Q: A persons hight is approximately 5 feet 11 Inches. Express this height in meters and centimeters

Q: A cannon on top of a 75 m cliff shoots a cannonball at a velocity of 125 m/s at an angle of 60°. (a)…

A: Step 1: Step 2:Step 3:Step 4:

Q: If it takes 1.53 s for the football to reach its highest trajectory, the highest point being 11.5…

A: Step 1:

Q: Don't use chat gpt

A: Approach to solving the question: Detailed explanation:Examples: Key references:

Q: What shape is the trajectory (graph of y vs. x) of the shells? For two shells fired at the…

A: 1. A shell's trajectory, or any projectile's trajectory under perfect circumstances (no air…

Q: Does this plot represent a straight line? What are the slope and the Y-int for the best fit line?…

Q: Suppose ten rocks, all made from the same material, are added to a graduated cylinder that contains…

A: Step 1: Step 2:

Q: Solve completely with clarified steps.

A: The Dipole and Plastic Block ScenarioUnderstanding the DiagramDipole: A pair of equal and opposite…

Q: 1. The vector position of a particle varies in time according to the expression r = (3.00 î–6.00 t²…

Q: At t=0, a particle starts from rest at x= 0, y = 0, and moves in the xy plane with an acceleration a…

A: Step 1:Given:The acceleration of the particle moving in the x-y plane is: a=(4.0i^+3.0j^)m/s2The…

Q: Don't use chat gpt It Chatgpt means

A: Step 1:

Q: Don't use chat gpt It

Q: What is the value of the rotational of a rotational of a vector? Explain your calculus

A: Here is the step-by-step explanation:The rotational of a rotational of a vector refers to taking…

Q: A grasshopper leaps into the air from the edge of a vertical cliff, as shown in the figure below…

A: Step 1:Part (a):Step 2:Part (b):

Q: What is the magnitude and direction of -A - B (negative A minus B)?

A: Step 1:Step 2:

Q: Don't use chat gpt

Q: Solve

A: Step 1:

Q: Part A (Figure 1) shows vectors A and B. For help with math skills, you may want to review: Vector…

Q: Let the number density (stars/volume) of stars be p. Take it to be uniform throughout the universe.…

A: Here is the step-by-step explanation:Given:Number density of stars =ρ (stars per unit…

Q: I need help with this problem and an explanation for the solution described below. (University…

A: Problem 1: Calculate the net force in the given figuresFigure 1: 40 N force at 60° angle A 40 N…

Q: A hydrogen atom exists with its electron in the n=5 state. The electron undergoes a transition to…

Q: Please answer in typing format

Q: A student club is designing a trebuchet for launching a pumpkin into projectile motion. Based on an…

A: The problem is asking for the derivative of the vertical position of the pumpkin trajectory with…

Q: 3.4** Two hobos, each of mass mɲ, are standing at one end of a stationary railroad flatcar with…

Question

Suppose a 75-kg sprinter accelerates from rest to 12 m/s in 3.15 s.

1. What is the power output, in watts, of the sprinter?

2. What is the power output, in horsepower, of the sprinter?

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

(a) What is the power output in watts and horsepower of a 70.0-kg sprinter who accelerates from rest to 10.0 m/s in 3.00 s? (b) Considering the amount of power generated, do you think a well-trained athlete could do this repetitively for long periods of time?
. In the annual Empire State Building race, contestants run up 1,575 steps to a height of 1,050 ft. In 2003, Australian Paul Crake completed the race in a record time of 9 min and 33 S, Mr., Crake weighed 143 lb (65 kg) , (a) How much work did Mr., Crake do in reaching the top of the building? (b) What was his average power output (in ft-lb/s and in hp)?
(a) How long would it takea 1.50105 -kg airplane with engines that produce 100 MW of power to reach a speed of 250 m,/s and an altitude of 12.0 km if air resistance were negligible? (b) If it actually takes 900 s, what is the power? (c) Given this power, what is the average force of air resistance if the airplane takes 1200 s? (Hint: You must find the distance the plane travels in 1200 s assuming constant acceleration.)
(a) What is the average useful power output of a person who does 6.00106 J of useful work in 8.00 h? (b) Working at this rate, how long will it take this person to lift 2000 kg of bricks 1.50 m to a platform? (Work done to lift his body can be omitted because it is not considered useful output here.)
Integrated Concepts (a) What force must be supplied by an elevator cable to produce an acceleration of 0.800 m/s2 against a 200-N frictional force, if the mass of the loaded elevator is 1500 kg? (b) How much work is done by the cable in lifting the elevator 20.0 m? (c) What is the final speed of the elevator if it starts from rest? (d) How much work went into thermal energy?
Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.0° slope at constant speed, as shown in Figure 7.37. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by friction as the sled moves 30.0 m along the hill? (b) How much work is done by the rope on the sled in this distance? (c) What is the work done by the gravitational force on the sled? (d) What is the total work done?
. An elevator is able to raise 1,000 kg to a height of 40 m in 15 s. (a) How much work does the elevator do? (b) What is the elevator’s power output?
A particle is subject to a force Fx that varies with position as shown in Figure P7.9. Find the work done by the force on the particle as it moves (a) from x = 0 to x = 5.00 m, (b) from x = 5.00 m to x = 10.0 m, and (c) from x = 10.0 m to x = 15.0 m. (d) What is the total work done by the force over the distance x = 0 to x = 15.0 m?
A person in good physical condition can put out 100 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time: (a) How many people ‘would it take to nm a 4.O0-kW electric clothes dryer? (b) How many people would it take to replace a large electric power plant that generates 800 MW?
A 3.00-kg object has a velocity (6.00i1.00j)m/s. (a) What is its kinetic energy at this moment? (b) What is the net work done on the object if its velocity changes to (8.00i+4.00j)m/s. (Note: From the definition of the dot product, v2=vv.)
(a) Find the useful power output of an elevator motor that lifts a 2500-kg load a height of 35.0 m in 12.0 s, if it also increases the speed from rest to 4.00 m/s. Note that the total mass of the counterbalanced system is 10,000 kg—so that only 2500 kg is raised in height, but the full 10,000 kg is accelerated. (b) What does it cost, if electricity is $0.0900 per kW h?
. A compact car can climb a hill in 10 s. The top of the hill is 30 in higher than the bottom, and the car’s mass is 1,000 kg. What is the power output of the car?