Question

How long does it take for a ball thrown vertically upward at 25m/s to rise?

Answer 1

2.55 s

Step-by-step explanation:

To know how long does it take to rise, we will use the following equation:

`v_f=v_i+at`

Where:

vf is the final velocity, so at the highest point is 0 m/s

vi is the initial velocity, in this case, 25 m/s

a is the acceleration due to gravity, so a = 9.8 m/s²

And t is the time that it takes to rise.

Therefore, we can replace the values and solve for t as:

`\begin{gathered} 0=25-9.8t \\ 9.8t=25 \\ t=(25)/(9.8) \\ t=2.55\text{ s} \end{gathered}`

So, the answer is 2.55 s