a bullet is moving with velocity of 100 strikes a wooden plank. it penetrates to the d depth of 20cm before coming to stop. calculate the average restardation of the bullet. while passing through it
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using
V^2-u^2=2as
0^2-100^2=2a0. 2
-10000=0.4a
-250m/s^2=a
this gives retardation
V^2-u^2=2as
0^2-100^2=2a0. 2
-10000=0.4a
-250m/s^2=a
this gives retardation
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