Posted by **andrew** on Thursday, April 12, 2012 at 11:20am.

A running man has half the kinetic energy of a boy half his mass. The man speeds up by 1.30 m/s and then has the same kinetic energy as the boy. What is the speed (in meters/second) of the boy?

## Answer this Question

## Related Questions

- science - A running man has half the kinetic energy of that of a boy of half of ...
- Physics - A boy has a mass of 45 kg and is running with a velocity of 8 m/s. ...
- physical science - A boy with a mass of 30 kg stands motionless at the end of a ...
- Chem please help - An object A has half the mass and twice the velocity of ...
- physics - A father racing his son has half the kinetic energy of the son, who ...
- Physics ~Work Kinetic Energy~ - 1.)A ball (m 0.5 kg) starts from rest and has ...
- Physics kinetic energy - Okay the equation for kinetic energy is = 1/2mv^2 so ...
- Univ-Phys - One car has twice the mass of a second car, but only half as much ...
- Physics - Two cars are moving. The first car has twice the mass of the second ...
- physics - 7. Two cars are moving. The first car has twice the mass of the second...