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Vesna [10]
3 years ago
7

You drop a stone down a well that is 100.0 m deep. How long will it take for the stone to reach the bottom, ignoring air resista

nce?
Remember, rest is the initial velocity and it equals 0.0 m/s
01.05
O 4.5 s
o 20 s
O 10 s
Physics
1 answer:
3241004551 [841]3 years ago
7 0

Answer:

4.5s

Explanation:

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A car travels at a constant speed around a circular track whose radiu is 2.6 km. The goes once arond the track in 360s . What is
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Answer:

Centripetal acceleration = 0.79 m/s²

Explanation:

<u>Given the following data;</u>

Radius, r = 2.6 km

Time = 360 seconds

<em><u>Conversion:</u></em>

2.6 km to meters = 2.6 * 1000 = 2600 meters

To find the magnitude of centripetal acceleration;

First of all, we would determine the circular speed of the car using the formula;

Circular \; speed (V) = \frac {2 \pi r}{t}

Where;

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Substituting into the formula, we have;

Circular \; speed (V) = \frac {2*3.142*2600}{360}

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Circular speed, V = 45.38 m/s

Next, we find the centripetal acceleration;

Mathematically, centripetal acceleration is given by the formula;

Centripetal \; acceleration = \frac {V^{2}}{r}

Where;

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Substituting into the formula, we have;

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Centripetal \; acceleration = \frac {2059.34}{2600}

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