Vector A is described as having magnitude 5 and angle -20°.

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8. Vector A is described as having magnitude 5 and angle -20°. Which is an equivaent statement of magnitude and angle of vector A? (Note: All angles are measured counterclockwise from the x-axis.)

10.

A boy throws a rock with an initial velocity of 2.5 m/s at 30.0° above the horizontal. How long does it take for the rock to reach the maximum height of its trajectory?
May 18th, 2015

8.mag=5

tantheta=(-20)


10. 0.117 sec

May 18th, 2015

they are not on my answer choices 

May 18th, 2015

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May 18th, 2015
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May 18th, 2015
Sep 19th, 2017
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