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A bullent of mass 20g enters into a fixed wooden block with a speed of 40m/s and stops in it.Find the change in internal energy during the process

Jayant Kumar , 12 Years ago
Grade 11
anser 2 Answers
Abhishek Kumar
Change in internal energy = 0
AS internal energy only consists of unordered motion not ordered motion of the body, which it will get when bullet enters and block starts to move.
Last Activity: 11 Years ago
nimo jar
u = 40 m/s
v = 0 m/s
Change in internal energy = Change in kinetic energy = |KEfinal – KEinitial |
= | 0 – ½ * 0.02 * 402 |
= 16 J
Last Activity: 8 Years ago
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