I NEED HELP PLEASE, THANKS! :)

1 answer:

7 0

We are given that a baseball player is running forward at 3 meters per second, throwing a ball at an angle of 20 with respect to a velocity of 20 meters per second -

( Thus, the horizontal component should be 3 + 20( cos 20 ),

( Respectively the vertical component should be 20( sin 20 )

Horizontal Component = ( About ) 21.7938...

Vertical Component = ( About ) 6.8404....

Now the speed, or otherwise velocity can be calculated through the formula v^2 = ( v1 )^2 + ( v2 )^2 -

$v^2 = ( 21.8 )^2 + ( 6.84 )^2,\\v^2 = 475.24 + 46.7856,\\v^2 = ( About ) 522,\\v = 22.8 ( meters / second )\\\\Resultant Speed = 22.8 m / s$

And the direction can be calculated through the formula - $direction = tan( v^2 / v^1 ),\\direction = tan( 6.84 / 21.8 ),\\direction = ( About ) 17.4 ( degrees )$

The resultant speed is 22.8 m / s, thrown with at an angle ( direction ) of 17.4 degrees

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Alika [10]

The factorization of A is y = (x - 8)(x + 7).
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In order to find these, you must first find where each graph crosses the x-axis. In the first problem it does so at 8 and -7. In order to find the correct parenthesis for those, you need to write it out as a statement and then solve for 0.

x = 8 ---> subtract 8 from both sides
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This means we use (x - 8) in our factorization.

You then need to repeat the process until you have all the pieces. In the second problem, there will be 3 instead of 2 since it crosses the axis 3 times.

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2 years ago

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OverLord2011 [107]

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