Homework Help Forum: physics - linear momentum with rockets

Posted by clay on Friday, October 16, 2009 at 2:24am.

A rocket of total mass 3180 kg is traveling in outer space with a velocity of 115 m/s. To alter its course by 35.0 degrees, its rockets can be fired briefly in a direction perpendicular to its original motion. If the rocket gases are expelled at a speed of 1750 m/s, how much mass must be expelled.

• physics - linear momentum with rockets - bobpursley, Friday, October 16, 2009 at 9:30am

  deltamass*velocity gas= 3180*vperp So figure the new vperp of the rocket to give a 35degree change with initial velocity 114 (tan35=Vperp/115 ?) then figure deltamass

  
  

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