Follow up for question i found on this forum please read

  • #1
follow up for question i found on this forum!! please read!!

1. https://www.physicsforums.com/showthread.php?t=93375

above is a link to the problem




2. For part A, the force when x is at 6 meters is 4, and the mass is 0.20 kg, so you divide: (4 / 0.20) and get 20 as the acceleration of the particle when it's displacement x is at 6 meters?

For part B, would you use the equation v = v0 + (1/2atsquared) ?


For part C, i got the answer of 48 J when i multiplied 4x12.


For part D, would you use the equation v = dt?


For part E, i am not sure, but is the final speed zero?


For part F, change in momentum = mv(final) - mv(initial). i am just not sure of what to plug in for this one.


any help is greatly appreciated!! thanks!

 

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