A small 0.40-kg box is launched from rest by a horizontal spring as shown in the figure below. The block slides on a track down a hill and comes to rest at a distance d from the base of the hill. Thecoefficient of kinetic friction between the box and the track is 0.30 along the entire track. The spring has a spring constant of 34.0 N/m and is compressed 30.0 cm with the box attached. The blockremains on the track at all times.30.0 cmThis answer has not been graded yet.(b) Calculate d.m50.0 cm(a) What would you include in the system? Explain your choice.40°-d = ?

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