How much work is done on the point-particle system

Assignment Help Physics

Reference no: EM13504898

A runner whose mass is 55 kg accelerates from a stop to a speed of 8 m/s in 3 seconds. (A good sprinter can run 100 meters in about 10 seconds, with an average speed of 10 m/s.)

What is the average horizontal component of the force that the ground exerts on the runner's shoes?

How much work is done on the point-particle system by this force? (Hint: use a fundamental principle, as applied to the point-particle system.)

Reference no: EM13504898

Questions Cloud

Determine the friction force on the bottom of the spool : A spool of wire of mass 6.9 kg and radius 0.28 m is unwound under a constant wire tension 15 N. Assume the spool is a uniform solid cylinder that rolls without slipping. Find the friction force on the bottom of the spool

Define equillibrium no matter what concentrations of product : Why does G always decrease as you move towards equillibrium no matter what concentrations of product and reactant you start with. or does it always decrease

Find how far did the center of mass of the real system move : Two identical 0.13 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an unstretched spring, How far did the center of mass of the real system move

Compute the sample mean and standard deviation : Compute the sample mean and standard deviation (show all steps and formulas). Compute the estimated standard error of M. (show all steps and formulas).

How much work is done on the point-particle system : A runner whose mass is 55 kg accelerates from a stop to a speed of 8 m/s in 3 seconds. How much work is done on the point-particle system by this force

Evaluate the ph of the resulting solution : Consider the titration of 100ml of .100M H2NNH2 (Kb=3.0*10^-6) by .200 M HNO3. Calculate the pH of the resulting solution after the following volumes of HNO3 have been added

How much rotational kinetic energy does the disk have : A string is wrapped around a disk of mass m = 1.9 kg and radius R = 0.12 m. Starting from rest, you pull the string with a constant force F = 8 N along a nearly frictionless surface. At this instant, how much rotational kinetic energy does the disk..

Prepare newcomb corporations income statement for 2009 : At what amount should each investment be carried on the balance sheet at the end of the year? Explain your answers and show any calculations necessary to arrive at your answers.

Explain how many grams of water escaped into the vapor state : A mixure of gases collected over water at 14 degrees celciushas a total pressure of 0.981 atm and occupies 55mL. How many grams of water escaped into the vapor state

User Account

All Pages