3 years ago

A airplane travels 3260 kilometers in 4 hours. What is the airplane average speed?

Physics

1 answer:

zavuch27 [327]3 years ago

4 0

I'm pretty sure that it's 815.

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To determine the height of a tall building such as Sears Tower in Chicago, Illinois a ball was dropped from the top of the build

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Answer:

The height of Sears Tower is 1448.5 feet.

Explanation:

<h3>We apply the free fall formula to the ball: </h3><h3> $y=v_{o} *t+\frac{1}{2} *g*t^{2}$ </h3><h3>y: The vertical distance the ball moves at time t </h3><h3> $v_{o}$ i: Initial speed </h3><h3>g=Gravity acceleration= $9.8*(\frac{\frac{1ft}{0.305m} }{s^{2} } )$ </h3>

Known information

We know that the vertical distance (y) that the ball moves in 9,5s is equal to height of Sears Tower (h).

Too we know that the ball is released from rest, then, $v_{0}$ =0