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April 2, 2015

April 2, 2015

Posted by **Jason** on Monday, August 6, 2012 at 8:34pm.

bullet of mass m 2 is fired vertically upwards into the block. The bullet imbeds itself in the block.

The block and bullet rise to a maximum height h. What is the bullet’s initial speed? Answer in

terms of m 1, m 2, h, and g.

- Physics -
**Elena**, Tuesday, August 7, 2012 at 4:59amThe law of conservation of linear momementum

m1•v +0=(m1+m2) •u

v=(m1+m2) •u/m1.

The law of conservation of energy

(m1+m2) •u²/2=(m1+m2) •g•h,

u=sqrt(2•g•h).

v=(m1+m2) •u/m1= (m1+m2) •sqrt(2•g•h)/ m1.

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