Dinstance traveled with a constant force?

  • Thread starter disque
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  • #1
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Homework Statement




A constant force of 396 N acts on a spacecraft of mass 7890 kg that has an initial velocity of 34 m/s. How far has the spacecraft traveled when it reaches a velocity of 4890 m/s?


The Attempt at a Solution



I tried doing F=ma and got the a= 19.92 and then setting up a=(vf-vi)/delta t

Didn't work.......
I dont know what I did wrong. Please help. thank you
 

Answers and Replies

  • #2
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Distance traveled with a constant force

Homework Statement


A constant force of 396 N acts on a spacecraft of mass 7890 kg that has an initial velocity of 34 m/s. How far has the spacecraft traveled when it reaches a velocity of 4890 m/s?


Tried setting it up with f=ma then taking (delta)v/(delta)t=a to find the position
 
  • #3
LowlyPion
Homework Helper
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Homework Statement


A constant force of 396 N acts on a spacecraft of mass 7890 kg that has an initial velocity of 34 m/s. How far has the spacecraft traveled when it reaches a velocity of 4890 m/s?


Tried setting it up with f=ma then taking (delta)v/(delta)t=a to find the position
Maybe after finding the acceleration you would use

Vf2 = Vi2 + 2*a*x

to yield the distance
 
  • #4
berkeman
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Merged two threads with the same question by disque (that's why there appear to be two original posts).
 

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