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Reika [66]
3 years ago
12

Please answer this question only if you know it!! 17 points and brainliest :)

Physics
2 answers:
patriot [66]3 years ago
7 0

The answer is 15. I hope my answer is correct. Please tell me if not. Goodluck!

Hope this helpss :)

Scrat [10]3 years ago
5 0

Power = (voltage) x (current)

90 Watts = (6 volts) x (current)

Divide each side by (6 v):

Current = (90 W) / (6v)

Current = 15 Amperes

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A ball is thrown up at 30m/s from the ground. What is it s maximum height?<br> How long did it take?
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<u>Answer: </u>

Maximum height reached by the ball thrown up at  30m/s is   3.06 seconds  and the height reached is  45.9 meters

<u>Explanation</u>:

Given:

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To find :

maximum height =?

time taken=?

Solution:

<em>Step 1:Finding the time taken to reach the highest point</em>:

The velocity of the ball at its highest ,final velocity v=0

Using the formula,

v=u+a t

Where a is acceleration due to gravity.Its value is-9.8 m / s^{2}

Substituting the values:  

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t=\frac{30}{9.8}

t=3.06 \mathrm{seconds}

<em>Step 2: finding the highest point </em>

Using the formula

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Substituting values

0^{2}-(30)^{2}=2(-9.8) s

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s=45.9 \text { meters }

Result:

Thus the maximum height reached is 45.9 meters in 3.06 seconds

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