Answer:
the coordinate is (4,5)
he said it was negative when it is actually positive
Step-by-step explanation:
i think
b A train backed up 7 feet and then moved
forward 7 feet.
We are given that,
The fall of the acorn is represented by the function,
Equating S(t) to 0 gives,
i.e.
Since, time cannot be negative.
So, i.e. 1.25 seconds is the time when the acorn will reach the ground.
Thus, from the figure below, we see that,
The interval in which the acorn is in the moving air is .