- #1

- 55

- 2

## Homework Statement

A 5kg mass moving at 20m/s collides with a stationary 10kg mass. If the 5kg mass comes to rest, how fast will the 10kg mass be moving?

M1 = 5kg

M2 = 10kg

V1 = 20m/s

## Homework Equations

KE = 1/2mv

^{2}

## The Attempt at a Solution

I am fairly confident in this, and that's what scares me. Can it really be so simple as a transference of energy? The 5kg mass has KE of approximately 1,000J. When it hits the other mass, the kinetic energy of the 10kg block would also be 1,000J. Then to find the velocity, I would take those 1,000J, divide them by 10, and multiply by 2, giving me 200, then I'd take the square root of that, giving me a new velocity of 14.14m/s...Is it possible I got this correct?