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March 28, 2017

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Starting from rest, a(n)9 kg block slides 9.7 m
down a frictionless ramp (inclined at 30◦
from
the floor) to the bottom. The block then
slides an additional 23.5 m along the floor
before coming to stop.
The acceleration of gravity is 9.8 m/s
2.Find the speed of the block at the bottom
of the ramp.
Answer in units of m/s

  • physics - ,

    h = 9.7*sin30 = 4.85 m.

    V^2 = Vo^2 + 2g*h
    V^2 = 0 + 19.6*4.85 = 95.06
    V = 9.75 m/s.

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