A bullet of mass 11.7 g is fired into an initially stationary blockand comes to rest in the block. The block, of mass 1.07 kg, issubject to no horizontal external forces during the collision withthe bullet. After the collision, the block is observed to move at aspeed of 4.90 m/s.

How much kinetic energy is lost?

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A bullet of mass 10.6 g is fired into an initially stationaryblock and comes to rest in the block. The block, of mass 1.11 kg,is subject to no horizontal external forces during the collisionwith the bullet. After the collision, the block is observed to moveat a speed of 4.90 m/s.

Find the initial speed of the bullet

518.01 m/s

How much kinetic energy is lost?

1) An object of mass 3.01 kg is released from rest and drops 1.75 mto the floor. The collision is completely inelastic. How muchkinetic energy is lost during the collision?

2) A bullet of mass 10.2 g is fired into an initially stationaryblock and comes to rest in the block. The block, of mass 1.12 kg,is subject to no horizontal external forces during the collisionwith the bullet. After the collision, the block is observed to moveat a speed of 4.90 m/s.
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