A scientist observes a petri dish containing a number of bacteria. On the first day, the dish had 300 bacteria on the second day
2 answers:
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Answer:
2.83 s
Step-by-step explanation:
We are given that
When a rock reached the ground then h(t)=0
Using quadratic formula
Time cannot be negative .Therefore, negative value of t can not be possible.
Hence, the rock takes 2.83 sec to reach the ground.