A 20kg sled has final velocity of 20m/s after it ascended a 25m tall hill.(adsbygoogle = window.adsbygoogle || []).push({});

I calculated the initial velocity as 30m/s:

[tex]v_0 = \sqrt{{20\frac{m}{s^2}^2}+2\times10\frac{m}{s^2}\times25m[/tex]

[tex]v_0 = 30\frac{m}{s}[/tex]

Now, if 1500J of work is being done by friction, how can I find the final velocity and if the sled will be able to climb up the hill?

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# Frictional Force

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