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A $2.0 \space kg$ block, initially moving at $10.0 \space m/s$, slides $50.0 \space m$ across a sheet of ice before coming to rest. What is the magnitude of the average frictional force on the block?

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$d = at^2 + v_i t + d_i$ – Ignacio Vazquez-Abrams Sep 30 '12 at 1:20
Can I get more to go on than this? Like what is $d$? – user42783 Sep 30 '12 at 1:27
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@user42783: Hello user & welcome to Physics.SE. Here, we discourage questions that ask users to solve homework problems. If that's what you need, then you aren't on the right place..! Take your time over our FAQ and also take a look over our Homework Policy... If you've something better than homeworks, we're happy with it. If you felt that you've revised your question, flag it for moderator attention..! – Ϛѓăʑɏ βµԂԃϔ Sep 30 '12 at 3:24

closed as too localized by dmckee♦ Sep 30 '12 at 2:10

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, see the FAQ.

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