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.
Answer:
Step-by-step explanation:
b:)
Answer:
none
Step-by-step explanation:
, the answer 17.25, there must a be a typo in your question
Answer:
C.
Step-by-step explanation:
Move to the right 2 units,
Move down 2 units.