A bullet comes out of the barrel of gun of length 2 m with a speed 80 m/s. The average acceleration of the bullet is

Question

A bullet comes out of the barrel of gun of length 2 m with a speed 80 m/s. The average acceleration of the bullet is (A)  1.6 m/ s2  (B)  160 m/s 2  (C)  1600 m/ s2  (D)  16 m/s2

Tardigrade Admin · Accepted Answer

Given, s=2 m, u=80 m/s , v=0 From v2=u2-2 a s ∴ (0)2=(80)2-2 × a × 2 or a=(80 × 80/4)=1600 m / s 2

Q. A bullet comes out of the barrel of gun of length $2 m$ with a speed $80 m / s .$ The average acceleration of the bullet is

$1.6 m / s^{2}$

$160 m / s^{2}$

$1600 m / s^{2}$

$16 m / s^{2}$

Given, $s = 2 m, u = 80 m / s, v = 0$
From $v^{2} = u^{2} - 2 a s$
$∴ (0)^{2} = (80)^{2} - 2 \times a \times 2$
or $a = \frac{80 \times 80}{4} = 1600 m / s^{2}$

Q. A bullet comes out of the barrel of gun of length 2m with a speed 80m/s. The average acceleration of the bullet is

1.6m/s2

160m/s2

1600m/s2

16m/s2