<span>Torque can be calculated by multiplying the force and the "perpendicular distance"
Hope this helps!</span>
∆v = -5 m/s
∆t = 5 s
a = ∆v/∆t = (-5 m/s)/(5 s) = -1 m/s^2 .
I know that's the right answer.
I THINK that's what choice-B is trying to say.
The answer is vaporization, then condensation.
Here is a set of flash card that can help with this subject.
