Question

A bullet hits a wall with a velocity of 20m/s and penetrates it up to a destance of 5cm fin the acceleration of the bullet in the wall

Answer 1

Answer:

Explanation:

Initial Velocity (u) = 20m/s

Final Velocity (v) =   0m/s

Displacement (d) =  5cm

From : v^2 - u^2 = 2as

=> (0m/s - 400 m/s)/0.05 m = 2a

=> a = (-400m/s / 0.05 m) / 2

Therefore, a = -4000m/s^2

Or 4000 m/s^2 retardation.

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