Answer: 8.73 ft/s
Step-by-step explanation:
We have the following equation that models the motion of the rock:
Where is the height of the rock at a time .
Now, if we can find and then the velocity of the rock at that height:
Rearranging the equation:
Multiplying the equation by -1:
Solving with the quadratic formula , where , ,
.
Choosing the positive result of the equation:
Since velocity is defined as the traveled distance in a given time , we have:
This is the velocity of the rock at the height of 48 feet
Answer:
What is the question?
Step-by-step explanation:
Answer:
i got 3x^2-4
Step-by-step explanation:
Answer: It's 81
Step-by-step explanation:
So, if B= 9 then it's 9^2 which is 9 x 9 = 81
Hope my answer has helped you and if not i'm sorry.