Question

A bullet is fired on to a wall with a velocity of 50 m/s. Ir the bullet at the depth of 10 cm inside the wall, find the retardation produced by the wall a) 12.5 km b) 12.5 km c) - 20.5 kms d) 32.5 Kms

Answer with solution​

Answer 1

Answer:

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Initial velocity u $:\longmapsto$ 50 m/s

Final velocity v $:\longmapsto$ 0

Distance s $:\longmapsto$ 10 cm

$:\implies$ 0.1 m

We know,

v² $:\longmapsto$ u² + 2as

a $:\longmapsto$ -u² / 2s

a $:\longmapsto$ -2500 / (0.2)

a $:\longmapsto$ -12500 m/s²

So, retardation $:\dashrightarrow$ 12500 m/s²