Question

bullet is fixed normally through a wooden planck of 0.05 the initial speed of the bullet is 200m/s and it emerges from the planck with a speed of 1000m/s find the retardation and the time taken by the bullet

Answer 1

v² - u² = 2as

(100)² - (200)² = 2a(0.05)

-30000 = 0.1 a

a = - 3×10^5 m/s