## Ruchi. 3 years ago a bullet going with speed 350m/s enters a concrete wall and penerate a distance of 0.5cm before coming to rest.find decelaration.

1. Dalvoron

You have initial velocity, final velocity, and displacement. Therefore, you could use: $a=\frac{v_1-v_0}{t}$and$s=v_0t+\frac{1}{2}at^2$, which should allow you to find t, which would further allow you to find a!

$v ^{2} - u ^{2}= 2 a s$

- 350 * 350 = 2 * 1/ 200 * a Or, a = - 350 * 350 * 100

5. Taufique

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6. Taufique

Thik huun bhai. To mera answer sahi hai na bhaiyaji...............??????????

8. Taufique

han apka answer sahi hai apne positive sign lekr bnaya hai isliye apka answer negative aya pr mai retardation lekr hi formula me negative sign laga diya hun isliye answer positive me arha hai ok..

okkkkkkkkkkk

10. Taufique

aadarsh ruchi kaun se class me hai...

ji bhaiya, ruchi di 11th mein hain.

12. Ruchi.

or aadarsh bhai bhi 11th me hai

yani ruchi di ke saath same class mein hi!!!!!!!!!:))))))))

mujhe "budha" mat banaiye ruchi di i have just bnow entred class 11.

Congrats ruchiii diiiii

16. Taufique

hehe....

Heheheheh

18. Taufique

mera bhai v is bar eleventh me gya hai....

Jii haan. 2 saal ke baad ...........................................IIT(hope so.............)

20. Taufique

apka Aadarsh bhai kvpy ka taiyari kaisa chal rha hai han...

Thik Thank bhai,........... abhi ncert ki portion start kiya huun. 2 - 3 mahine mein tayari puri ho jayegi........

22. Ruchi.

tnx 4 hlp @taufique