Tuesday
September 30, 2014

Homework Help: Physics

Posted by Joe on Wednesday, January 13, 2010 at 3:58pm.

I'm having some trouble with this question

A 4200-kg rocket is traveling in outer space with a velocity of 120m/s toward the Sun. It needs to alter its course by 23 degrees, which can be done by shooting is rockets briefly in a direction perpendicular to itís original motion. If the rocket gases are expelled at a speed of 2200 m/s relative to the rocket, what mass of gas must be expelled

I see that I need to find the other velocity

Vy = 120 tan 23
this gave me about 50.94 m/s

I do not know were to go from here

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