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3 years ago

Imagine a 10kg block moving with a velocity of 20m/s to the left.

Physics

1 answer:

tankabanditka [31]3 years ago

6 0

KE =1/2mv^2=0.5 * 10 * 20^2= 5*400=2000

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3 years ago

A student fills a tank of radius r with water to a height of h1 and pokes a small, 1.0 cm diameter hole at a distance h2 from th

Alik [6]

when a hole is made at the bottom of the container then water will flow out of it

The speed of ejected water can be calculated by help of Bernuolli's equation and Equation of continuity.

By Bernoulli's equation we can write

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Now by equation of continuity

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from above equation we can say that speed at the top layer is almost negligible.

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now again by equation of continuity

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$v = \sqrt{2 g h}$

here we have

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$v = \sqrt{2* 9.8 * 0.47}$

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3 years ago

A 1,000 kg car is driving on a 15 m high bridge at 5 m/s. What is the kinetic energy of the car?

yanalaym [24]

Answer:

$KE=12,500J$

Explanation:

The formula for kinetic energy is:

$KE = \frac{1}{2}mv^2$

We can plug in the given values into the equation:

$KE = \frac{1}{2}*1000kg*(5m/s)^2$

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3 years ago

PLEASE ANSWER I DONT HAVE THAT MUCH TIME

ollegr [7]

Answer:

its paper

Explanation:

hope it helps

ace ur test !

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3 years ago

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3 years ago

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