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Illusion [34]
3 years ago
11

A Chevy Camaro drives straight off the top level off a parking garage at 9 m/s. If the car landed 81 meters away from the base o

f the parking garage, how high (height) was the top level? 196.9 meters 296.9 meters 396.9 meters 496.9 meters​
Physics
1 answer:
Tatiana [17]3 years ago
3 0

Answer:

The correct option is c: 396.9 meters.

Explanation:  

First, we need to find the time at which the car landed:

v = \frac{x}{t}

t = \frac{x}{v} = \frac{81 m}{9 m/s} = 9 s                                                                    

Now, we can find the height of the top-level:

y_{f} = y_{0} + v_{0_{y}}t - \frac{1}{2}gt^{2}

Since the car has only a velocity in the horizontal direction, we have:

0 = y_{0} + 0*t - \frac{1}{2}gt^{2}

y_{f} = \frac{1}{2}gt^{2} = \frac{1}{2}9.81 m/s^{2}*(9 s)^{2} = 397 m

Therefore, the correct option is c: 396.9 meters.

I hope it helps you!  

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