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A bullet of mass 4.54 g is fired horizontally into a 2.41-kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.210. The bullet comes to rest in the block, which moves 1.83 m. Assume that the work done on the block because of friction is 83% of the energy dissipated because of friction. (a) What is the speed of the block immediately after the bullet comes to rest within it? (b) What is the initial speed of the bullet?

A bullet of mass 4.54 g is fired horizontally into a 2.41-kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.210. The bullet comes to rest in the block, which moves 1.83 m. Assume that the work done on the block because of friction is 83% of the energy dissipated because of friction. (a) What is the speed of the block immediately after the bullet comes to rest within it? (b) What is the initial speed of the bullet?

Grade:upto college level

1 Answers

Deepak Patra
askIITians Faculty 471 Points
8 years ago
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