- #1

bondgirl007

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## Homework Statement

A 3000kg space capsule is traveling with a velocity of 200m/s. In an effort to alter its course, it fires a 25.0 kg projecticle perpendicular to its original direction of motion at a speed of 2000 m/s. What is the speed of the capsule and by what angle has its direction changed.

* my teacher said assume mass stays the same*

## Homework Equations

P = mv

m1v1 + m2v2 = m1v1' + m2v2'

M = m1 + m2

V = combined velocity

## The Attempt at a Solution

MV = m1v1' + m2v2'

(3000)(200) = (3000)(v1') + (25)(2000)

v1' = 1833.3

Is this right so far? I'm very confused and am not sure if I should be using Pythagoras to find it or what?