Question: A block is sliding down a long ramp with an initial speed of 4 . 0 m / s . The reamo makes an angle

A block is sliding down a long ramp with an initial speed of 4.0 m/s. The reamo makes an angle of 20 degrees from the horizontal. The coefficents of friction for the ramp are us=0.5 and uk=0.10. What is the speed of the block after 2.5 seconds?

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