What is the speed fo the box just before hitting the spring

Reference no: EM13308128

A 4.5kg box slides down a 4.6m -high frictionless hill, starting from rest, across a 2.4m -wide horizontal surface, then hits a horizontal spring with spring constant 490N/m . The other end of the spring is anchored against a wall. The ground under the spring is frictionless, but the 2.4m-long horizontal surface is rough. The coefficient of kinetic friction of the box on this surface is 0.22.

What is the speed of the box just before reaching the rough surface?

What is the speed fo the box just before hitting the spring?

How far is the spring compressed?

Reference no: EM13308128

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