The ball's velocity will be represented by the derivative of its distance function:

Now find the times

for which this is equal to 30, i.e. solve

This has two solutions,

, but only one is positive and falls in the interval
![[0,3]](https://tex.z-dn.net/?f=%5B0%2C3%5D)
. So the velocity reaches 30 cm/s when

.
Answer:
x= -9/4=-2.25
Step-by-step explanation:
plz rate and thank me if it is correct again i am a begginer!!! thank you:)
Answer:
g=12
Step-by-step explanation:
4(2y)=24
8y=24

y=3

Since we know the value of y we substitude

36=3g
g=12
Answer:
fr
Step-by-step explanation:
6. 7/3
8. 7/3
please don't get mad if these answers are wrong