A friend drops a package to you from a window 16 feet above where you first catch it. It drops an additional 3 feet as you bring it to a stop with a constant force. In order to calculate the force required, you need
A) the time it takes for you to stop the package.
B) the mass of the package.
C) no additional information.

Question

Quizplus · Accepted Answer

The force required to bring an object to a stop with a constant force is dependent on the mass of the object, so knowing the mass of the package is necessary to calculate the force required. The time it takes to stop the package is not needed for this calculation and the additional distance it drops does not affect the force required.

A Friend Drops a Package to You from a Window