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Yuliya22 [10]
3 years ago
11

PLEASE HELP ME WITH THIS

Physics
1 answer:
Kitty [74]3 years ago
3 0

Answer:

i think it might be c but i know its not A or B and im

on the fence for D so the best answer would be C

Explanation:

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A soccer player kicks a ball with a speed of 30 m/s at an angle of 10. How long does the ball stay in the air?
Natalka [10]
"10" is not a very satisfying description of an angle.
I'll assume it's 10 degrees, and that it's the angle of the initial trajectory
above the horizontal.

The vertical component of the ball's speed is 30 sin(10°) = 5.209 meters per second.

The acceleration of gravity is 9.8 meters per second² downward.

The ball continues to rise for 9.8/5.209 = 1.881 seconds after the kick.
At that time, it reaches the peak of its arc, and if nobody else has contacted it yet,
it begins to fall, and takes the same length of time to return to the ground whence
it was kicked.

So the time between the kick and return to the ground is (2 x 1.881) = <u>3.763 seconds</u>.

Note: As is customary and necessary at the high school level,
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4 0
3 years ago
You walk 10 miles north, 20 miles south, and 5 miles north. Taking north to be the positive y direction, define a position vecto
gulaghasi [49]

Considering north as positive Y axis

       First  10 miles north means a positive 10 displacement along y direction

      Second 20 miles south means a negative 20 displacement along y direction

       Third 5 miles south means a positive 5 displacement along y direction

So total displacement = 10 - 20 + 5 = -5 miles displacement

So position vector of the final position = - 5 j

3 0
3 years ago
In the Milky Way Galaxy, where would you expect to find the bulge?
nalin [4]

Answer:

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Explanation:

3 0
3 years ago
Please help!!!
Dominik [7]

Answer:

i Believe the correct answer is "An open circuit being changed into a closed circuit"

Explanation:

8 0
3 years ago
Strontium has how many neutrons
Lilit [14]

Answer:

50

Explanation:

7 0
3 years ago
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