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gizmo_the_mogwai [7]
2 years ago
5

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. How long will the bal

l be in the air before it lands? Round your answer to the nearest tenth.
s




How far will the football travel before it lands? Round your answer to the nearest tenth.


m
Physics
1 answer:
Soloha48 [4]2 years ago
7 0

Answer:

See below

Explanation:

vertical velocity=13.9 sin 25

When it hits the ground  y = 0

0 = vo t - 1/2 a t^2

0    =  13.9 sin 25  t   - 1/2 (9.81)t^2  

0 = 13.9 sin 25 - 1/2 (9.81) t        shows t = 1.1976  ~<u> 1.2 sec</u>

horizontal speed x time = distance

13.9 cos 25   x   1.1976 =<u>15 .1 meters </u>    

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