Given,

mass (m) = 149 grams = 0.149kg

Initial velocity (u) = 41.9m/sec

final velocity (v) = 0m/sec

distance (s)= 2cm = 0.02m

force (F)= ?

We know that:-

force (F)= mass*Acceleration

using Kinematic relation:-

v2-u2 = -2as

Acceleration (a) = v2-u2/-2s

= 02-(41.9)2/-2*0.02

= -1755.61/-0.04

= 43890.25

Acceleration (a) = 43890.25m/s2

Now,

force (F) = mass*Acceleration

= 0.149*43890.25

= 6539.6

≈ 6540N

force (F) = 6540N

v^2 = u^2 - 2as

0 = u^2 - 2as

a = u^2/2s

= 41.9^2/2(0.02)

= 43890.25

F = 0.149 x 43890.25

= 6539.64725

= 6539.65 N