Solve the problem.The motion of a projectile that is fired at a 60° angle with the horizontal is given by x = 
t, 
for t in 
Suppose a projectile is fired with an initial velocity of 300 feet per second at an angle of 60° with the horizontal. Find (a) the time when it reaches maximum altitude (b) the maximum altitude.
A. (a) 4.7 sec
(b) 352 ft
B. (a) 32.5 sec
(b) 6328 ft
C. (a) 8.1 sec
(b) 1055 ft
D. (a) 16.2 sec
(b) 2436 ft
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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