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Conversion of momentum for 2 objects

label Physics
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Hi, can someone walkd me through this question: a 10 g bullet is fired at 550m/s into a 4.0kg block that sits at the edge of a 50-cm-high table. The bullet embeds itself in the block and carries it off the table. How far from the point directly below the table's edge does the block land?

Oct 23rd, 2017

DATA : -

m = 10 g = 10 * 10^-3 kg = 10^-2 = 1 / 100 = 0.001 kg

M = 4 kg

v = 550 m/s

h = 50 cm = 50/100 m = 0.5 m

SOLUTION : -

m * v = (m + M) * V, 

V = m•v/(m+M) 

= 10^-2 * 550 / (10^-2 + 4) = 

= 0.14 m/s. 

h = g * t^2 / 2 

t = √(2 * h / g) 

= √(2 * 0.5 /9.8)

= 0.32 s, 

D = V * t

= 0.14 * 0.32

= 0.0448 m. 

Jan 21st, 2015

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Oct 23rd, 2017
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Oct 23rd, 2017
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