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Phoenix [80]
3 years ago
9

1. A car travels 50 miles going at a constant speed of 60 miles per hour. How long did it take the

Physics
1 answer:
Fynjy0 [20]3 years ago
8 0

Answer:

A. 0.83 hours

Explanation:

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The Petronas twin towers in Malaysia and the Chicago Sears tower have heights of about 452 m and 443 m respectively. If objects
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Answer:

0.09 s

Explanation:

From the second equation of motion,

S=ut+\frac{1}{2}at^{2}

Here, u is the initial velocity, a is the acceleration due to gravity, t is time taken, and S is the total displacement or distance.

From the given problem,

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Now,rearrange the distance equation for t.

t=\sqrt{\frac{2S}{a} }

So time difference.

\Delta t=\sqrt{\frac{2(452)}{9.8} }-\sqrt{\frac{2(443)}{9.8} }\\\Delta t=\sqrt{92.244898}-\sqrt{90.4081633}  \\\Delta t=9.60 s-9.51s\\\Delta t=0.09 s

Therefore, the difference in time, object will reach the ground is 0.09 s

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A 5 kg toy is tied to a rope where the tension measures 150 N. What is the weight of the object?
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