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3 years ago

1)A rectagular prism has the

Mathematics

1 answer:

densk [106]3 years ago

5 0

Answer:

87.15m^3

Step-by-step explanation:

L*B*H

8.3ft *7.5ft* 1.4ft

87.15m^3

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4 years ago

David drops a soccer ball off a building. The building is 75 meters tall.

Nezavi [6.7K]

a) 70.1 m

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$h(t)=h_0 - \frac{1}{2}gt^2$

where $h_0 = 75 m$ is the height of the ball at time t=0. Substituting t=1 s, we can find the height of the ball 1 seconds after it has been dropped:

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b) 3.9 s

We can still use the same equation we used in the previous part of the problem:

$h(t)=h_0 - \frac{1}{2}gt^2$

This time, we want to find the time t at which the ball hits the ground, which means the time t at which h(t)=0. So we have

$0=h_0 - \frac{1}{2}gt^2$

And solving for t we find

$t=\sqrt{\frac{2h_0}{g}}=\sqrt{\frac{2(75 m)}{9.8 m/s^2}}=3.9 s$

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3 years ago