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Ugo [173]
3 years ago
6

A ball is thrown up onto a roof, landing 4 sec later at height of 20m above the release level. The balls path just before landin

g is angled at 60 degree with the roof.
a) find the horizontal distance d it travels. b) what is the magnitude of the balls initial velocity?
c) what is the angle (relative to the horizontal) of the balls initial velocity?
Physics
1 answer:
Kobotan [32]3 years ago
8 0
<span>c) what is the angle (relative to the horizontal) of the balls initial velocity? </span>
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Ultrasound with a frequency of 4.257 MHz can be used to produce images of the human body. If the speed of sound in the body is t
shutvik [7]

Answer:

2.49 * 10^(-4) m

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Parameters given:

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Answer:

Yes, it's correct

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We can re-arrange the previous equation in order to solve explicitely for a, the acceleration, and we find:

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