(S points) A o.5 kg block slides along a horizontal frictionless surface at 2.0 m/s. It...

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Answer 1

Answer #1

16. Applying energy conservation,

m v^2 / 2 = k x^2 / 2

0.5 (2^2) = (800)x^2

x = 0.05 m

17. Applying energy conservation,

PEi + KEi = PEf + KEF

m g (50) + 0 = m g (40) + m v^2 /2

v = sqrt(2 x 9.8 x (50 - 40))

v= 14 m/s

Answer 2

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