What speed must you toss a ball straight up so that it takes 4 s to return to you? Show your work.
1 answer:
1) Type of motion: constant acceleration.
2) acceleration, a = 9.8 m/s^2
3) time up = time down = 4seconds / 2 = 2 seconds
4) formula = Vf = Vo - a*t^2/2
Vf = 0 => Vo = a*t^2 / 2 = 9.8m/s^2 * (2 s)^2 / 2 = 19.6 m/s
Answer: 19.6 m/s
You might be interested in
Answer:
2.5
Step-by-step explanation:
The dilation is 2.5. Using the point b(0,4) and B' (0,10), divide 10/4 you get 2.5.
Twelve million threehundred and seventy five thousand ans three
Your answer is 48, because 96/2 is 48
Hope this helps
Answer:
i need the number line
Step-by-step explanation:
lol
Answer:
mean is the best way
Step-by-step explanation:
