Question

I need the answer im doing an interm and need to pass

Answer 1

Data:

When you have two variables directly proportional they follows the next:

If the variables are time (t) and speed (s):

`(s_1)/(t_1)=(s_2)/(t_2)`

Then, if you have:

t1=3

s1=16.5

t2=7

s2=?

`\begin{gathered} (16.5)/(3)=(s_2)/(7) \\ \\ (7(16.5))/(3)=s_2 \\ \\ s_2=(115.5)/(3)=38.5 \end{gathered}`Then, if the object has fallen for 7 second its speed is 38.5m/s