How Is Final Velocity Calculated from Impulse?

AI Thread Summary
The discussion focuses on calculating the final velocity of a 538 g object acted upon by a force, with an impulse of 7 N s. The formula used is I = m∆v, where the impulse is set equal to the mass times the change in velocity. One participant initially calculated the final velocity as 13.011 m/s but received incorrect feedback. Another participant confirmed the calculation process but suggested that the issue might be related to formatting the answer without units. Ultimately, the original poster resolved their confusion with assistance from others in the thread.
AdnamaLeigh
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The force shown in the force-time diagram acts on a 538 g object. Find the final velocity of the object if it is initially at rest. Answer in m/s.
diagram.jpg

I correctly found the impulse by determining the area underneath the curve. It's 7 N s. I know that we can determine the final velocity by using this equation: I=m∆v. I also saw a topic somewhere on this site where someone suggested the same formula. I used this formula and I get the wrong answer.
7 = .583(vf - 0) vf = 13.011m/s
I also tried inputting -13.011m/s and that was also incorrect. I don't know where I'm going wrong.
 
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Hmm, I can't see what you've done wrong. I get the exact same answer !
 
so you get 7=.583vf? then you just divide and get 12.0007 right? or am i missing something. at any rate. is this an online problem? because if it tells you to give velocity in m/s you don't have to write the units in your submitted answer... usually. did you try that?
 
My dyslexia always seems to kick in at the worst moments. I got it. Thanks guys.
 

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