Answer: (A) 6.6 sec (B) 6.89 sec
Step-by-step explanation:
y = -16t² + 1700
1000 = -16t² + 1700
-1700 -1700
-700 = -16t²
÷-16 ÷-16
43.75 = t²
√43.75 = √t²
6.6 = t
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y = -16t² + 1700
940 = -16t² + 1700
-1700 -1700
-760 = -16t²
÷-16 ÷-16
47.5 = t²
√47.5 = √t²
6.89 = t