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Lorico [155]
3 years ago
6

I need help answering this, I keep running into dead ends.

Physics
1 answer:
Vlad [161]3 years ago
5 0

Answer:

Use of the "range" formula will greatly simplify this -

R = V^2 sin 2 θ / g  

R = 15^2 sin 70 / 9.8 = 21.6 m     distance originally traveled

r = 21.6 /2 = 10.8     if distance is halved

sin 2 θ = 10.8 * 9.8 / 225 = 28.1 deg            

θ = 14 deg

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