A bullet of $0.1 g$ strikes a sand-bag at a speed of $10^{3} m s^{- 1}$ and gets embedded after traveling $5 c m$ . Calculate the resistive force exerted by the sand on the bullet is :

5 k N

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500 N

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1000 N

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10 k N

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Solution

The correct option is D $1000 N$
Given,
Mass of bullet(m) $= 10 g = 0.01 k g$
Velocity of bullet(v) $= 10^{3} m s^{- 1}$
Distance travelled(S) $= 5 c m = 0.05 m$
As work done by bullet $=$ kinetic energy
$F \times S = \frac{1}{2} m v^{2}$
or, $F \times 0.05 = 0.5 \times 0.1 \times 10^{- 3} \times 1000^{2} = 1000 N$

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A bullet of 10 g strikes a sand bag at a speed of 1000 m/s and gets embedded after travelling 5 cm.
Calculate a) the resistive force exerted by the sand on the bullet.
b) the time taken by the bullet to come to rest.

Question 18
Using second law of motion, derive the relation between force and acceleration. A bullet of 10 g strikes sand-bag at a speed of $10^{3} m s^{- 1}$ and gets embedded after travelling 5 cm. Calculate

(i) the resistive force exerted by the sand on the bullet
(ii) the time taken by the bullet to come

Q. A bullet of 10g strikes on a sand bag with speed of 1000m/s and stop after travelling 5cm inside the bag. Calculate :-

a) The resistive force exerted by the sand on the bullet
b) The time taken by the bullet to come to rest.

Q. A bullet of 10 g strikes a sand-bag at a speed of

10^{3} m s^{- 1}

and gets embedded after travelling 5 cm. Then the time taken by the bullet to come to rest is :

Q. A bullet of

10 g

strikes sand-bag at a speed of

10^{3} m / s

and comes to stop after travelling 5 cm. Calculate:
(i) The resistive force exerted by the sand on the bullet.
(ii) Time of collision.

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A bullet of 0.1g strikes a sand-bag at a speed of 103ms−1 and gets embedded after traveling 5cm. Calculate the resistive force exerted by the sand on the bullet is :

The correct option is D 1000NGiven,Mass of bullet(m)=10g=0.01kgVelocity of bullet(v)=103ms−1Distance travelled(S)=5cm=0.05mAs work done by bullet = kinetic energyF×S=12mv2or, F×0.05=0.5×0.1×10−3×10002=1000N

A bullet of $0.1 g$ strikes a sand-bag at a speed of $10^{3} m s^{- 1}$ and gets embedded after traveling $5 c m$ . Calculate the resistive force exerted by the sand on the bullet is :