Question

A bullet is fired on a wall with a velocity of 100 m/s .if the bullet stop at a depth of 10 cm inside the wall then find the retardation produce by the wall​

Answer 1

$\large\mathcal\red{QUESTION-}$

$\rm A \: bullet \: is \: fired \: on \: a\: wall \: with \: a \: velocity \: \\ \rm of \: 100 m/s . \: If \: the \: bullet \: stop \: at \: a \: depth \: \\ \rm of \: 10 \:cm\: inside \: the\: wall\: then, \: find \: the\: \\ \rm retardation \: produce \: by \: the\: wall \: ??$

$\large\mathcal\orange{SOLUTION-}$

$\bf{In \: this \: Condition !}$

$\\ \textbf{When bullet was fired from </p><p></p><p>the} \\ \textbf{Gun . It moved with initial Velocity }\\ \textbf{U = 100 m/s and Strick with Wall } \\ \textbf{Final Velocity of gun became 0 }\\ \textbf{so The retardation produced by } \\ \textbf{the wall on the bullet is 5000 m/ s^{2} .}$

Answer 2

QUESTION:

A bullet is fired on a wall with a velocity of 100 m/s .if the bullet stop at a depth of 10 cm inside the wall then find the retardation produce by the wall.

ANSWER:

Retardation = -50000 m/s²

____________________

Explanation:

given that,

A bullet is fired on a wall with a velocity of 100 m/s

so,

here ,

initial velocity of bullet = 100 m/s

also,

given that,

the bullet stop at a depth of 10 cm inside the wall

so,

final velocity = 0 [bullet stops]

distance travelled by the bullet = 10 cm

by changing it into m

= 10/100

= 0.1 m

so,

here we have ,

initial velocity(u)  = 100 m/s

final velocity(v) = 0

distance travelled(s) = 0.1 m

so,

by the equation of motion

v² = u² + 2as

where a = acceleration of the object.

so,

putting the values

(0)² = (100)² + 2a(0.1)

0.2a + 10000 = 0

0.2a = -10000

a = -10000/0.2

a = -50000 m/s²

negation of acceleration shows the retardation or negative acceleration

so,

Retardation = -50000 m/s²