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yKpoI14uk [10]
2 years ago
14

What will be the final velocity of a 5.0 g bullet starting from rest, if a net force of 45 N is

Physics
1 answer:
djverab [1.8K]2 years ago
5 0

The net force performs a total amount of work equal to

(45 N) (0.80 m) = 36 J

on the bullet, and this is in turn is equal to the change in the bullet's kinetic energy by the work-energy theorem. So we have

W = ∆K = 1/2 mv²

since the bullet starts at rest, where m = its mass and v = its final velocity.

Solve for v :

36 J = 1/2 (0.0050 kg) v²   ⇒   v = 120 m/s

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3 years ago
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3 years ago
. During a collision with a wall, the velocity of a 0.200-kg ball changes from 20.0 m/s toward the wall to 12.0 m/s away from th
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Explanation:

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