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3241004551 [841]

2 years ago

8

A 0.5kg ball falls from a building that Is 50m high. how much kinetic energy will it have when it has fallen half way to the gro

und?

1 answer:

castortr0y [4]2 years ago

4 0

Calculate velocity at halfway to the ground.

vfinal = root 2ad

v = root (2*9.81m/s^2*25)

v = 69.367175234 m/s

Kinetic energy = 1/2mv^2

Kinetic energy = 1/2 * (69.367175234 m/s^s^2

Ek = 2405.9025 Joules

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Discuss the limitations of using the Doppler shift to determine an object's speed.

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Answer and Explanation:

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A car tire rotates with an average angular speed of 32 rad/s. In what time interval will the tire rotate 3.5 times? Answer in un

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Explanation:

given,

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now,

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A punter drops a 2.0 kg ball from rest vertically 1 meter down onto his foot. The ball leaves the foot with a speed of 18 m/s at

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Answer:

Explanation:

Given

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height of fall $h=1 m$

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$\phi =tan^{-1}(1.856)$

$\phi =61.7^{\circ}$

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Below is an attachment containing the solution.

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