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2 years ago

Help please i don’t know

Physics

1 answer:

Fantom [35]2 years ago

4 0

Answer:

Explanation:

Potential energy at the top of the slide

PE = mgh = 49(9.8)(3) = 1,440.6 J

Energy converted to work of friction

W = Fd = 35(10) = 350 J

Converted potential that becomes kinetic energy

1440.6 - 350 = 1090.6 J

KE = ½mv²

v = $\sqrt{2KE/m}$

v = $\sqrt{2(1090.6)/49}$

v = 6.671902...

v = 6.7 m/s

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