Answered

If a baseball lands with a speed of 80 miles/hr after traveling with an acceleration of -6 miles/hr/sec for 5seconds, what was the initial speed at which the ball was hit?

Answer :

We are given that an object falls with an acceleration of -6 miles/h/s. To determine the initial velocity we will use the following motion:

[tex]v_f=v_0+at[/tex]

Where:

[tex]\begin{gathered} v_f,v_0=\text{ final and initial velocity} \\ a=\text{ acceleration} \\ t=\text{ time} \end{gathered}[/tex]

Now, we solve for the initial velocity by subtracting "at" from both sides:

[tex]v_f-at=v_0[/tex]

Now, we plug in the values:

[tex]80\frac{mi}{h}-(6\frac{mi}{hs})(5s)=v_0[/tex]

Now, we solve the operations:

[tex]50\frac{mi}{h}=v_0[/tex]

Therefore, the initial velocity is 50 mi/h.

Go Question: Other Questions