Physics, asked by MyOwnWorstCritic, 6 months ago

A bullet of mass 15 g has a speed of 400 m/s. What is its kinetic energy? If the bullet strikes a thick target and is brought to rest in 2cm, calculate the average net force acting on the bullet. What happens to the kinetic energy originally in the bullet?

Answers

Answered by annmariya10
1

Answer:

kinetic energy =half mv square

Answered by Anonymous
1

Answer:

Mass = m = 15 g = 0.015 kg                                 [ 1kg = 1000 g ]

Velocity = v = 400 m/s

K.E = 1/2 mv²

     = 1/2 × 0.015 × 400 × 400  = 1200 Joules

Work done = K.E

W = 1200 J

W = F × s

s = 2 cm = 0.02 m

1200 = 0.02 F

F = 1200 / 0.02

F = 60000 N ==> Answer

The energy gets converted to Heat Energy .

Explanation:

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