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January 30, 2015

January 30, 2015

Posted by **tom** on Tuesday, October 7, 2008 at 10:08pm.

(a) What is the average exhaust speed of the engine?

(b) If this engine is placed in a rocket body of mass 57.5 g, and if the rocket is fired in outer space, what is the final velocity of the rocket? Assume the fuel burns at a constant rate

for average speed i did fthrust=change of M/change in T i got .78 this is not right help please

- physics -
**bobpursley**, Tuesday, October 7, 2008 at 10:12pmWhat units are you using.

Mass change is .0127kg,

force =5.26N

deltTime=1.90sec.

v=F(time)/masschange

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