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January 30, 2015

January 30, 2015

Posted by **Marc** on Sunday, April 8, 2012 at 2:49pm.

If the bullet has an initial speed of 870 m/s, what distance D will the block travel horizontally before landing on the floor?

- physics -
**Elena**, Sunday, April 8, 2012 at 3:36pmm•v= (m+M) •V,

V = m•v/(m+M) = 5.89•10^-3•870/(5.89•10^-3+3.09) =

=1.294 m/s.

h=g•t^2/2 ,

t = sqrt(2•h/g) = sqrt(2•0.83/9.8) =

= 0.412 s,

D = V•t = 1.294•0.412 = 0.53 m.

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