KinematicsHard
Question
The velocity of a bullet is reduced from 200m/s to 100 m/s while travelling through a wooden block of thickness 10cm. Assuming it to be uniform, the retardation will be:
Options
A.15 ×104m/s2
B.10 ×104m/s2
C.12 ×104m/s2
D.14.5 ×104m/s2
Solution
Using the formula, v2 - u2 =2 as
(100)2 - (200)2 = -2a ×
2a × = (200)2 - (100)2 = 300 × 100
a =
= 15 ×104m/sec2
(100)2 - (200)2 = -2a ×
2a ×
= (200)2 - (100)2 = 300 × 100 a =
= 15 ×104m/sec2Create a free account to view solution
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