Solving a Physics Problem: Determining Seal's Slide Distance

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To solve the problem of how far the seal slides on the ice, the user calculated the acceleration due to friction as -1.95 m/s² using the formula Fnet=ma. The next step involves applying the work-energy principle, where the work done by friction equals the change in kinetic energy. The user initially struggled with finding the time but received guidance to use the work-energy equation instead. This approach simplifies the calculation by relating the work done to the distance slid. The discussion highlights the importance of understanding both forces and energy in solving physics problems.
einsteinette
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Hello there, I am having trouble with this question:

A seal, mass of 82kg, jumps onto a horizontal ice float with a Vo of 6m/s i. The friction between the seal's belly and ice is 160N. g is 9.81m/s^2. How far does the seal slide?

So so far, if I'm correct, I calculated the acceleration:

Fnet=ma (i)

a= Ffriction/mass

a=-160N/82kg=1.95m/s^2.

And now I'm stuck. Do you need to find the time?
 
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Hello einsteinette! :smile:

Use the work-energy equation … work done = change in energy. :wink:
 
Ahh! Ok thanks! I get it now!
 

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