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An arrow is launched 30.0° above the horizontal with an initial speed of 20.0 m/s from the top of a watch tower.

After 3.00 seconds, what will be the arrow's speed?

Take air resistance to be negligible and gravity to be the only source of acceleration

A

$19.4 m/s$

B

$20.0 m/s$

C

$26.0 m/s$

D

$29.4 m/s$

E

$34.1 m/s$

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