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3 years ago

5

Solve i need done fast please

1 answer:

Bogdan [553]3 years ago

3 0

A- 53
B- 53
C- 127
D- 54
E- E+20
F- 59

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Maria throws a softball straight up into the air with an initial velocity of 50 ft/sec. The ball leaves her hand when it is exac

Nataly_w [17]

Answer:

The equation that models the situation is $s_{f} = 4+\frac{v_{f}^{2}-2500}{64.348}$ .

Step-by-step explanation:

Let suppose that effects from air friction and Earth's rotation can be neglected, so that the softball can be modelled experiment a free fall, that is, an uniform accelerated motion due to gravity. From we know the initial velocity and position of the position and we can determine the final position of the ball as a function of the final velocity:

$v_{f}^{2} = v_{o}^{2}+2\cdot a \cdot (s_{f}-s_{o})$ (1)

Where:

$s_{o}$ , $s_{f}$ - Initial and final position of the softball, measured in feet.

$a$ - Acceleration, measured in meters per square second.

$v_{o}$ , $v_{f}$ - Initial and final velocities of the softball, measured in feet per second.

If we know that $v_{o} = 50\,\frac{ft}{s}$ , $a = -32.174\,\frac{m}{s^{2}}$ and $s_{o} = 4\,ft$ , then the equation that models the situation is:

$v_{f}^{2} = 2500-64.348\cdot (s_{f}-4)$

Then, we clear the final position of the softball:

$-\frac{v_{f}^{2}-2500}{-64.348} = s_{f}-4$

$s_{f} = 4+\frac{v_{f}^{2}-2500}{64.348}$

The equation that models the situation is $s_{f} = 4+\frac{v_{f}^{2}-2500}{64.348}$ .

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2 years ago

The price of a large can of fancy popcorn is $8.17. Between which two prices is the price of the popcorn?

schepotkina [342]

Answer:

$8.00 to $8.49

Step-by-step explanation:

a large can of fancy popcorn is $8.17 which means that $8.17 is not higher or lower of $8.00 or $8.49.

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3 years ago

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Picture 1 : Is the volume of this 18ml.

sattari [20]

I can't tell what the numbers are on the first one but you got the second one right, and the last one would be different it would be 24 I believe.

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3 years ago

A church has 10 bells in its bell tower. Before each church service 7 bells are rung in sequence. No bell is rung more than once

elixir [45]

Answer:

3 Because there are only three bells that aren't being run there for three additional ways that the bells could be rung

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2 years ago

Find the third number if their average is 6 and two of them are 6 and 7

lorasvet [3.4K]

Answer:

5

Step-by-step explanation:

If their average is 6 and there are three numbers in total, the total sum of the three numbers would be:

6×3 = 18

You know that two of them is 6 and 7, so you can find the last number easily.

18-6-7 = 5

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2 years ago

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