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2 years ago

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On a hot summer day several swimmers decide to jump into a river. They step off the bridge and strike the water at 1.5s later. I

gnore air resistance. What is the height of the bridge?
I did it but I don’t know if it’s right

1 answer:

xxTIMURxx [149]2 years ago

6 0

That is right because base*length is how you get the height

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h =(3.7 - .58)m = 3.12m

Now put PE into KE and we have to use the formula:

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√2 x 9.8 x 3.12

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I hope this helps!

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2 years ago

The lungs are located in the chest true or false

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A 1200 kg sports car accelerates from 0 m/s to 30 m/s in 10 s. What is the average power of the engine?

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Answer:

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1 year ago

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An ore car of mass 39000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 19 m lower vert

cupoosta [38]

Answer:

The compression in the spring is 5.88 meters.

Explanation:

Given that,

Mass of the car, m = 39000 kg

Height of the car, h = 19 m

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We need to find the compression in the spring in stopping the ore car. It can be done by balancing loss in gravitational potential energy and the increase in elastic energy. So,

$mgh=\dfrac{1}{2}kx^2$

x is the compression in spring

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2 years ago

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The distance covered is 25.9 m.

<h3>How deep is the cave?</h3>

We know that the speed of sound refers to the speed with which an sound moves in an object.

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Time taken = 0.15s

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d = distance

t = time taken

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Learn more about speed of sound:brainly.com/question/15137350

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1 year ago