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Ber [7]
3 years ago
8

What is the momentum of a 110 kg professional fullback running across the line at 9.2 m/s

Mathematics
1 answer:
Naya [18.7K]3 years ago
6 0

Answer:

p = 1012\ kgm/s

Step-by-step explanation:

In physics the linear momentum p of an object is defined as the product of its mass by its velocity.

p = mv

Where m is mass and v is velocity

In this case the professional fullback has a mass m = 110\ kg and a speed v = 9.2\ m / s

Then the momentum is:

p = 110*9.2

p = 1012\ kgm/s

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4 years ago
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Solve by substitution: <br> -5x + y = -2<br> -3x + 6y = -12<br><br> please explain
fomenos

First we pick the equation. Let's say we pick first one. From it we express y.

-5x+y=-2\Longrightarrow y=-2+5x

Then we use this y and plug it in instead of y in the second equation.

-3x+6(-2+5x)=-12

Now just solve for x.

-3x-12+30x=-12 \\-3x=-30x \\\underline{x=10}

We plug this x in the first equation.

-5\cdot10+y=-2

And solve for y.

-50+y=-2 \\\underline{y=48}

So the solution to the equation is geometrically a point P which lies on the intersection of the two lines.

\boxed{P(10,48)}

Hope this helps.

r3t40

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