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A bullet hits a wall with a velocity of 20m/s and penetrate it up to a distance of 5cm . Find the deceleration of the bullet in the wall?

Posted by Sweta Soreng 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

u= 20 m/s
v= 0
s = 5 cm = 0.05 m

from 3rd equation,
v² -u² = 2as
⇒0 - (20)² = 2×0.05×a
⇒0.1 a = - 400
⇒a = - 4000 m/s²

deceleration will be - 4000 m/s²

1Thank You

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