Question

22.
A bullet strikes a plank of thickness 5 cm with a
velocity of 1000 m/s and emerges out with a
velocity of 400 m/s, the average retardation of
the bullet is
(A) -8.4 x 10 m/s (B) 8.4 x 10° m/s
(C) -60 x 10 m/s (D) 60 x 10 m/s​

Answer 1

Answer:

14 X 10 x2

Explanation:

is your correct answer