A car moving initially with speed v₀ slows down with an acceleration of magnitude a and comes to a full stop after traveling a distance d. What was the speed of the car when it had traveled half that distance, d/2? A)v₀/2 B)v₀/4 C)v₀/ $\sqrt { 2 }$ D)v₀/8

Question

Quizplus · Accepted Answer

Using the equation $v^2 = v_0^2 - 2ad$, when the car has traveled half the distance (d/2), the equation becomes $v^2 = v_0^2 - 2a(d/2)$. Solving for v gives $v = v_0/\sqrt{2}$.

A Car Moving Initially with Speed V0 Slows Down with an Acceleration

A Car Moving Initially with Speed V₀ Slows Down with an Acceleration