Answer:
h = 17.65 m
Step-by-step explanation:
The given equation gives the speed at impact :

h is height form where the object is dropped
Put v = 18.6 m/s in the above equation.

So, the object must be dropped from a height of 17.65 m.
Answer:
5 hours
Step-by-step explanation:



But assuming integer hours only, round down to 5h. The cost will be $600.
Answer:n = 18
Step-by-step explanation:
divide each side by 14 then get n = 18
The maximum number of minutes she could use her phone is 150