Homework Help: physics

Posted by angel on Monday, August 1, 2011 at 2:16am.

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?

physics - Thakgalo sakwana, Monday, August 1, 2011 at 4:24am
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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physics - ariel salvadico, Monday, August 1, 2011 at 7:20am
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.
physics - Yuri, Monday, August 1, 2011 at 11:07am
how can you solve it using work power and energy?

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