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A 0.22-kg wood block is held in place against the spring by a 200-N force. The force is removed, and the block shoots off with a velocity v1 = 1.1 m/s after leaving the spring (shown in figure). The block goes down a frictionless incline and has a velocity at the bottom of v2=2.5 m/s. The track is frictionless between points A and B. The block enters a rough (frictional) section at point B, extending all the way to E, with a coefficient of kinetic friction between the block and the rough surface is 0.22. The velocity of the block is v3 = 1.4 m/s at point C. The block stops at point D. How far apart are points B and C?
 
 

.75 m

0.5 m

1.25 m

1.0 m

0.25 m

 
 Jun 21, 2016

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