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alexandr402 [8]
3 years ago
14

A ball is thrown downward from the top of a 55.0 m tower with an initial speed of 11.0 m/s. Assuming negligible air resistance,

what is the speed of the ball just before hitting the ground?
Physics
1 answer:
irina1246 [14]3 years ago
8 0
I'm not positive however my guess is this.
KE=(1/2)mv^2
KE=(1/2)(55)(121)
KE=3327.5m/s^2
You might not want to use this tho.
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The energy transfer in terms of work has the equation:

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To be consistent with units, let's convert them first as follows:

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Calculate the focal length of the mirror formed by the convex side of a shiny spoon that has a 1.54 cm radius of curvature. (b)
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Explanation:

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(b) The power of mirror is given by the reciprocal of focal length i.e.

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Hence, this is the required solution.

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