physics

posted by angel

A 2.0-kg wooden block slides down an inclined plane 1.0 m high and 3.0 m long. The block starts from rest at the top of the plane. The coefficient of kinetic friction between the block and plane is 0.35. What is the speed of the block when it reaches the bottom?

  1. Thakgalo sakwana

    Sin¤= 1/3
    ¤=19.47'

    Fnet= Fg// - Ff
    Fnet= mg.sin¤ -Ff
    =2(9.8)sin19.47-0.35
    Fnet= 6.183N

    a= Fnet/m
    a= 6.183/2
    a=3.091m/s^2

    (Vf^2)=(Vi^2) +2as
    Vf^2= (0)+2(3.091)(3)
    Vf^2= 18.546
    Vf= 4.31m/s downward.

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  2. ariel salvadico

    a skier starts from rest and slide 9 m down a slope in 3 s. at what time, after starting, will the skier acquire a velocity of 24m/s? assume constant acceleration.

  3. Yuri

    how can you solve it using work power and energy?

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