Question

Calculate the time required for an object to increase velocity from 25 ft/s to 125 ft/s. Use the formula V = V0 + 32t, where V0 is the starting velocity of a falling object, V is the final velocity of the falling object, and t is the time for the object to fall.
3200 seconds
4800 seconds
3.125 seconds
4.69 seconds

Answer 1

Using the equation of motion:
$V=V_0+32t$

Plug in the final velocity:$V=125$
and the initial velocity:$V_0=25$

Then you would get:
$125=25+32t\\ 125-25=32t\\ 100=32t\\ t= \frac{25}{8} \\ t=3.125$