Solving a Physics Problem: Determining Seal's Slide Distance

[einsteinette]

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?

 

[tiny-tim]

Hello einsteinette!

Use the work-energy equation … work done = change in energy.

 

[einsteinette]

Ahh! Ok thanks! I get it now!