For this, all you need is the velocity formula which is Vf = Vi + at.
Vf = final velocity.
Vi = initial velocity.
a = acceleration
t = time

Vf = Vi + at.

Vf= 0 + (- 9.8 m/sec^2) (7s)

*The 0 says that the original velocity is zero. The - 9.8 m/sec^2 is gravity because there is nothing else acting upon it, and it is negative because it is falling. The 7s is time time.*

All you have to do then, is simplify to get 68.6 m/s which is B.

8 0

3 years ago

10. Write an equation in slope-intercept form for a line that is parallel to the line y= 2/5x +1

harina [27]

If two lines are parallel to each other, then they have the same slope, but different y-intercepts.

So any y-intercept works basically

You could do y=2/5x+2 if you wanted or y=2/5x-7 or something like that

Hope this helped.

8 0

3 years ago