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One strategy in a snowball fight is to throw a snowball at a high angle over...

One strategy in a snowball fight is to throw a snowball at a high angle over level ground. Then, while your opponent is watching that snowball, you throw a second one at a low angle timed to arrive before or at the same time as the first one. Assume both snowballs are thrown with a speed of 28.5 m/s. The first one is thrown at an angle of 63.0° with respect to the horizontal.

(a) At what angle should the second snowball be thrown to arrive at the same point as the first?
°

(b) How many seconds later should the second snowball be thrown after the first in order for both to arrive at the same time?
s

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