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The velocity of a bullet is reduced from 200m/s to 100m/s while travelling through a wooden block of thickness 10cm.The retardation,assuming it to be uniform will be

Raj Chaudhary , 7 Years ago
Grade 9
anser 2 Answers
Aditya Garg

Last Activity: 7 Years ago

By using 2as=v^2 -u^2we haveu=200m/s v=100m/s& s=0.1m(10cm) from here deacc ( retardation)comes 150000m/s

sana

Last Activity: 5 Years ago

here initial velocity ,u = 200
final velocity , v = 100
distance, s = 10 cm = 0.1
therefore, retardation = v^2 = u^2 + 2as
substituting values, 40000 = 10000 + 0.2s
40000-10000 = 0.2s
s = 30000/0.2
s = 150000m/s^2 OR 15*10^4 m/s^2

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