Physics

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Two balls undergo inelastic collision. The y-momentum after the collision is 98 kilogram meters/second, and the x-momentum after the collision is 100 kilogram meters/second. What is the magnitude of the resultant momentum after the collision?

• Physics -

p=sqrt{p(x)² +p(y)²} =
= sqrt(98² +100²)=140 kg•m/s

• Physics -

v = Sqrt(v1^2 + v2^2)
v = sqrt(98^2 + 100^2)
V = 140.01
V = 1.4 * 10^2

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Can someone walk me through how to solve this?

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