A bullet of 10g strikes a sandbag at the speed of 10³m/s and gets embedded after travelling 5cm. Calculate (i) The resistive force exerted by the sand on the bullet. (ii) The time taken by bullet to come to rest.
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Answer:
Correct option is
D
10
−4
s
v
2
=u
2
+2as
0=(10
3
)
2
+2×a×(5×10
−2
)
a=−10
7
m/s
2
v=u+at
0=10
3
−10
7
×t
t=10
−4
s
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