Question

A foot ball is thrown upward with an angle of 30° with respect to the horizontal. To
throw a 40 m pass what must be the initial speed of the ball?
(a) 18 m/s
(b)21 m/s
(c) 38 m/s
(d) 12 m/s
(correct answer is b how?)​

Answer 1

Answer:

Hello There!

Explanation:

The situation is depicted in the figure with θ=30. We can use the trajectory equation y=tanθ

0

x−

2v

0

2

cos

2

θ

0

gx

2

setting x=20m and y=5m

Then 5m=(0.58)(20m)−

2v

0

2

×0.75

(9.8m/s

2

)(20m)

2

Thank you for the love friends.

Please mark as the brainliest answer.

Therefore, the initial speed of the ball, v=20m/s

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