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3 years ago

13

Alice builds another model to describe the movement of the particles of a substance after it changes state due to thermal energy

being added or removed. which of the below claim safely be made using her model

1 answer:

sweet-ann [11.9K]3 years ago

4 0

Explanation:

so sorry

don't know but please mark me as brainliest please

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slamgirl [31]

Answer:

Speed at which it will reach the ground is given as

$v_f = 46.8 m/s$

Total time for which it will remain in air is given as

t = 6.3 s

Explanation:

As we know that the object is projected upwards with speed

$v_i = 15 m/s$

$g = - 9.81 m/s^2$

now when it will reach the ground then we have

$y = v_y t + \frac{1}{2} at^2$

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$4.905 t^2 - 15 t - 100 = 0$

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$v_f = v_i + at$

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$v_f = 46.8 m/s$

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Explanation:

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