Two objects are dropped from a bridge,an interval of 1.0 s apart.Air resistance is negligible.During the time that both objects continue to fall,their separation
A)increases.
B)decreases.
C)stays constant.
D)increases at first,but then stays constant.
E)decreases at first,but then stays constant.

Question

Quizplus · Accepted Answer

Since air resistance is negligible, both objects accelerate at the same rate due to gravity. The second object starts falling 1 second later, so the first object has a head start. As both accelerate equally, the distance between them increases over time.

Two Objects Are Dropped from a Bridge,an Interval of 1