Multiple Choice
A projectile is dropped, and reaches the ground at 140 m/s. How long does it take the projectile to reach ground? (Assume the position function is , where a = -10
.)
A) 7 s
B) 28 s
C) 4.47 s
D) 14 s
E) 3.16 s
Correct Answer:

Verified
Correct Answer:
Verified
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