Question

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Energy and Collisions 100m 53. A bullet of mass m is moving horizontally with speed vo when it hits a block of mass 100m that is at rest on a horizontal frictionless table, as shown above. The surface of the table is a height h above the floor. After the impact the bullet and the block slide off the table and hit the floor a distance x from the edge of the table. Derive expressions for the following quantities in terms of m, h, Vo, and appropriate constants: a. the speed of the block as it leaves the table b. the change in kinetic energy of the bullet-block system during impact c. the distance x Suppose that the bullet passes through the block instead of remaining in it. d. State whether the time required for the block to reach the floor from the edge of the table would now be greater less, or the same. Justify your answer. e. State whether the distance x for the block would now be greater, less, or the same. Justify your answer 21

Answer 1