A bullet is fired in a wall with a velocity of 100m/s. If the bullet stops at a depth of 10 cm inside the wall. Find the retardation provided by the wall?

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Solution

we know that

v² - u² = 2as

or retardation will be

a = (v² - u²) / 2s

here,

u = 100 m/s

v = 0

s = 10cm = 0.1m

so,

a = (0 - 100²) / 2×0.1

thus,

a = -50000 m/s²

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A bullet is fired in a wall with a velocity of 100m/s. If the bullet stops at a depth of 10 cm inside the wall. Find the retardation provided by the wall?

we know that v2 - u2 = 2as or retardation will be a = (v2 - u2) / 2s here, u = 100 m/s v = 0 s = 10cm = 0.1m so, a = (0 - 1002) / 2×0.1 thus, a = -50000 m/s2

we know that

v² - u² = 2as

or retardation will be

a = (v² - u²) / 2s

here,

u = 100 m/s

v = 0

s = 10cm = 0.1m

so,

a = (0 - 100²) / 2×0.1

thus,

a = -50000 m/s²