- #1
Lui4
- 22
- 2
- Homework Statement
- A stone is thrown straight up with a speed of 15.0m/s
(a) How fast will it be moving when its altitude is 8.0m above the point from which it was thrown? How much time elapses while the stone is reaching that height?
(b) Is there one answer or are there two answers? Why?
- Relevant Equations
- D=vot+(1/2) (a) (t)^2
Hey, I am new to this community and I am in need of help with this physics problem. I have used the formula above and the answer I get is 1.43s. The correct two answers are 0.68s and 2.4s. For the Vf the answer is 8.3 m/s.