A ball falls vertically downward and bounces off a horizontal floor. The speed of the ball just before reaching the floor (`u_1`) is equal to the speed just after having contact with the floor (`u_2`) , `u_1 = u_2` . The corresponding magnitudes of accelerations are denoted respectively by `a_1` and `a_2` . The air resistance during motion is proportional to speed and is not negligible. If g is acceleration due to gravity, then–
A. `a_(1) lt a_(2)`
B. `a_(1) gt a_(2)`
C. `a_(1)=a_(2) ne g`
D. `a_(1)=a_(2)=g`
