Question

Help me its urgent
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Answer 1

Explanation:

KE of bullet = 1/2 * 0.12*40^2 =96 J

this energy is very less as compared to the energy 1350 J which is required to break the stone. so it will not crack the stone.

minimum mass of bullet required

= 1350*2/40^2 = 1.6875 kg

Answer 2

Explanation:

The stepping back of courses of brick during the construction phase of a wall, usually in expectation of the wall's completion at a later date.

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