Question

When a bullet having velocity 200 m/s penetrates a 1 m thick wooden block, its velocity decreases to 100 m/s. Calculate the retardation of the bullet.​

Answer 1

Answer:

15,000 m/sec^2

Explanation:

V^2 - U^2 = 2aS

(100)^2 - (200)^2 = 2 a ×1

10000-40000 = 2 a

-30000 = 2 a

a = -15,000 m/sec^2

Here the negative value says that a is retardation.