A first ball is dropped from a bridge

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Kinematics · Kinematics

Problem

A first ball is dropped from a bridge. One second later, a second ball is dropped from the same point. Ignore air resistance and take

g = 9.8\,\text{m/s}^2

. What is the distance between the two balls exactly

2\,\text{s}

after the first ball is released? (a)

9.8\,\text{m}

(b)

15\,\text{m}

(c)

4.9\,\text{m}

(d)

14.7\,\text{m}