3 years ago

A driver brings a car to a full stop in 2.0 s. If the car was

Physics

1 answer:

Dvinal [7]3 years ago

7 0

Working displayed in the picture below, the answer is -11 m s^-2

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A small balloon is released at a point 150 feet away from an observer, who is on level ground. If the balloon goes straight up a

Elza [17]

Answer:

$\dfrac{dz}{dt}=0.65\ ft/s$

Explanation:

Given that

x= 150 ft

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From the diagram

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When ,x= 150 ft and y= 14 ft

$z^2=150^2+14^2$

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By differentiating with respect to time t

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Here x is constant that is why

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Therefore the distance between balloon and observer increasing with 0.65 ft/s.

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