Wednesday

October 1, 2014

October 1, 2014

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

**Answer this Question**

**Related Questions**

physics - i need help figuring out what formaula to use for finding the final ...

physics-forces - 1. a fully loaded rocket has a mass of 2.92x10^6kg. It's ...

physics - The engines of a 1.20 x 10^5 N rocket exert an upward thrust of 2.00 x...

PHYSICS - Model rockets are lightweight rockets powered by very small engines. A...

motion,physics - Model rockets are lightweight rockets powered by very small ...

physics - if a rocket engine delivers a constant thrust, does it deliver more ...

Physics - A typical model rocket engine exerts an average force of 5 N on its ...

science - The engines of a 1.20 x 10^5 N rocket exert an upward thrust of 2.00 x...

Physics - A rocket whish is in deep space and initially at rest relative to an ...

Physics - A 19 N thrust is exerted on a 0.4 kg rocket for a time interval of 8 ...