Physics-please help

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You're given a ramp 0.5m in height with a 3m incline. A mass of 1kg is at the top of the ramp and there is a friction of 2N.

If the ramp has a force of friction of 2N, what will the speed at the bottom of the ramp be?

  • Physics-please help -

    First calculate acceleration
    angle of incline, θ = arcsin(0.5/3)
    mass, m = 1 kg
    Component of force down the incline
    =mg sin(θ)
    Frictinal force = 2N
    Net force down incline, F
    =mg sin(θ)-2 N
    Acceleration,a
    =F/m

    Now kinematics:
    initial velocity, u = 0
    2aS=v²-u²

    v=speed at the bottom of the ramp.

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