Question

What is the velocity of an object that is falling to Earth for 8 seconds? 1.225 m/s b. 9.8 m/s2 c. 78.4 m/s d. 0.816 m/s2

Answer 1

Step-by-step explanation:

Just use the acceleration equation here:

`a=-(v)/(t)` where a = -9.8; velocity is also negative because it's falling down and down is negative. Filling in:

`-9.8=-(v)/(8)` so

-9.8(8) = -v and

v = 78.4 m/s downward (the word "downward" takes place of the negative sign)