How Much Fuel Does a Spacecraft Use to Generate 1.5 MN Thrust?

[matramlee]

A spacecraft ’s motors provide a total thrust of 1.5 MN. If the exhaust speed is 2.5 km/s, at what rate is fuel being used?

Homework Statement

Thrust = 1.5 MN
Exhaust speed = 2.5 km/s

rate fuel being used = ?

 

[zhermes]

How do you think you should start?
What does the information you're given (thrust and velocity) tell you about the situation?
Are there any helpful values you might be able to calculate?

 

[matramlee]

i don noe.. pls help me..

 

[zhermes]

That's what I'm trying to do. The PF Forum rules require that you try to start the problem. What are you having trouble understanding?