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Problem-1 A gelatin block with mass 1.00kg is sitting at rest on top of a horizontal surface. The

coefficient of kinetic friction between the block and the surface is 0.70.

A small steel ball with mass 10.9g is moving horizontally directly at the center of the block with a speed

of 853m/s. The ball then collides with the block and gets stuck inside of it.

(a) Assuming that the block stays in one piece, how much of the initial kinetic energy of the ball was

converted into overall (heat + light + sound + material distortions) energy during the collision?

KE = 1/2

KE=

- lov

ми

2

10-9x 853

bo

= 3.9655X 10

Sagot :

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