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3 years ago

11

A football player kicks a football, from ground level, with an initial velocity of 27.0 m/s at an angle 30° above the horizontal

.
a. What is the maximum height the ball attained?
b. How long did it take the ball to return to the launching height?
C. How far away did it land?

1 answer:

Bond [772]3 years ago

6 0

Answer:

See answers below

Explanation:

a.

(vf)² = (vi)² + 2gy

0 = (27sin30°)² + 2(-9.8)y

y = 36.3 m

b.

vf = vi + gt

0 = (27sin30°) + (-9.8)t

t = 2.72 s

2.72 x 2 = 5.44 s

c.

x = (vi)t + (1/2)at²

x = (27cos30°)(5.44) + 0

x = 22.66 m

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