1. When an unbalanced force acts on an object, O the object remains at rest
the weight of the object decreases.
O the object's motion changes.
the inertia of the object increases.

The pressure in car tires is often measured in pounds per square inch (lb/in.2), with the recommended pressure being in the range of 25 to 45 lb/in.2. suppose a tire has a pressure of 27.5 lb/in.2 . convert 27.5 lb/in.2 to its equivalent in atmospheres.