A car suddenly starts
If a car at rest suddenly starts to move forward, what will happen?
A. The passengers move their heads backward relative to the motion of the car.
B. The passengers move their heads forward relative to the motion of the car.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
If a car at rest suddenly starts to move, the inertia of the passengers tends to keep them at rest relative to the earth, and so their heads move backward relative to the car.