Solution 3 on Equations of uniformly accelerated motion in 1D
Answer=A
- Initial velocity (vi) = 0 m/s
- Final velocity, (vf) =?
- Acceleration due to Gravity (a) = g = 9.80 m/s2
- Time (t) = 18 s
Acceleration is calculated as:
$\overrightarrow{a}=\frac{V_{f}-V_{i}}{t}$
vf = vi + at
vf = 0+(9.80×18)=176.4 m/s
Thus, the final velocity of the ball will be 176.4 m/s.