Mechanical energy per step per kilogram of body mass

Assignment Help Physics
Reference no: EM13668529

While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 56 kg person develops a power of 71 W during a race, how fast is the person running? (Suppose a running step is 1.5 m long.)

Reference no: EM13668529

Questions Cloud

Large heavy disk is mounted to a table by a firm clamp : A large heavy disk is mounted to a table by a firm clamp. A string is wound about an axle on the wheel from which a 100g mass is suspended. The radius of the axle is 0.01m and the large wheel has a mass of 2kg. The noted acceleration is 0.25m/sec2. W..
What is the average power of the elevator motor : A 685-kg elevator starts from rest and moves upward for 2.70 s by constant acceleration until it reaches its cruising speed, 1.75 m/s.  What is the average power of the elevator motor through this period?
Two point-source loudspeakers are a certain distance apart : Two point-source loudspeakers are a certain distance apart, and a person stands 12.0 m in front of one of them on a line perpendicular to the baseline of the speakers. If the speakers emit identical 1000-Hz tones, what is their minimum nonzero separa..
Suppose that the speed of sound : How fast in kilometres per hour, should a sound source be moving toward you to make the observed frequency 5.0% greater than the true frequency? (Suppose that the speed of sound is 340 m/s.)
Mechanical energy per step per kilogram of body mass : While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 56 kg person develops a power of 71 W during a race, how fast is the person running? (Suppose a running step is 1.5 m long.)
Automobile moves by constant speed down a highway : When an automobile moves by constant speed down a highway, most of the power developed by the engine is utilized to compensate for the mechanical energy loss due to frictional forces exerted on the car with the air and the road.
Average power of the elevator motor through this period : A 685-kg elevator starts from rest and moves upward for 2.70 s by constant acceleration until it reaches its cruising speed, 1.75 m/s. What is the average power of the elevator motor through this period?
Discover the speed and direction of the second chunk : A skater embeds a firecracker in large snowball and pushes it across a frozen pond at 7.6 m/s. The firecracker explodes, breaking the snowball into two equal-mass chunks. One chunk moves off at 9.3 m/s at 19° to the original direction of motion. Disc..
Jets be fired in order to stop the satellites rotation : A cylindrical satellite is 1.4m in diameter, with its mass of 940 kg distributed approximately uniformly throughout its volume. The satellite is spinning at 10rpm about its axis but it should be stopped so that the space shuttle crew can make repairs..

Reviews

Write a Review

Physics Questions & Answers

  Find the average power supplied by the child

A playground merry-go-round has radius 2.50mand moment of inertia 2800kg?m2 about a vertical axle through its center, What is the average power supplied by the child

  Find how far does putty-block system compress the spring

A 0.480 kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 24.0 N/m. How far does the putty-block system compress the spring

  What is the mathematical expression for the wave

A wave has the following properties: amplitude = 0.37 m, period = 68 s, wave speed = 13 m/s. What is the mathematical expression (similar to one of the following equations) for the wave

  What is the acceleration of the object

The velocity vs. time curve of an object is an increasing straight line. You observe when the time is 1 second that the velocity is equal to 3 m/s, What is the acceleration of the object

  Compute a power factor and power

A coil having L=0.14 H ,R=12? is connected across a v=110v, f=25Hz line. Compute a power factor and power

  A capacitor is formed from a hollow copper sphere of inner

a capacitor is formed from a hollow copper sphere of inner radius r 36.3 cm and outer radius r 45.4 cm. calculate the

  How much has the volume of the gasoline decreased

A tanker ship is filled with 2.25 x 10^5 m^3 of gasoline at a refinery in southern Texas when the temperature is 17.2° C. how much has the volume of the gasoline decreased

  Find the kinetic energy of the recoil electron

If the scattered photon has a wavelength of 0.320nm , what is the wavelength of the incident photon,  Find the kinetic energy of the recoil electron

  What is the period of the satellite orbit

A satellite is in a circular orbit just above the surface of themoon. The radius of the moon is 1738 km. What is the period of the satellite orbit

  Determine the moment of inertia of the wheel

A block of mass m is attached to a string that is wrapped around the circumference of a wheel of radius R and moment of inertia I. Find the moment of inertia of the wheel if its radius is 8.0 cm

  What is the total kinetic energy of each wheel

Two identical wheels are moving on horizontal surfaces. The center of mass of each has the same linear speed. However, one wheel is rolling, What is the total kinetic energy of each wheel

  Explain where and how is the center of mass located

Is the center of the mass of the pendulum-ball system at the center of the ball? If not, where and how is the center of mass located

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd