Calculating Impulse of a Collision: A Simple Guide

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To calculate the impulse of a collision, the equation used is Impulse = Force x Time. Given an average force of 509.79 N and a collision time of 35.1 milliseconds, the impulse can be calculated directly in Newton-seconds. There is confusion regarding the desired unit of Joules-seconds, as impulse is typically expressed in Newton-seconds, which is equivalent to momentum. The discussion suggests that the request for Joules-seconds may be a typo. Ultimately, the correct calculation should yield the impulse in Newton-seconds.
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I was to calculate the impulse of a collision. I was given the Average force in Newton, and the collison time in seconds. I need the answer to be in Joules - Seconds and not in Newton - Seconds. I used the equation Impulse = Force x Time. I am have a tremendous brain fart. Can you help?
 
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I don't think you want your answer to be in Joule-seconds, since that's not the unit of momentum...

What's the context?
 
A collision occurs w/ a time of impact is 35.1 milliseconds and the average force is 509.79 N. What is the impulse (in Joules-Seconds)?
 
I would just go with F*t and ignore that part. It may just be a typo
 

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