College Algebra Word Problem

Question

When a skydiver jumps from an airplane, her downward velocity, in feet per second, before she opens her parachute is given by the formula below, where t is the number of seconds that have elapsed since she jumped from the airplane. The terminal velocity for the skydiver is 168 feet per second. v = 168(1 − 0.834t) How many seconds does it take to reach 90% of the terminal velocity? (Round your answer to two decimal places.)

Answer 1

.9*168 = 168(1-0.834t)

.9 = 1 - .834t

.1 = .834t

t = .12

 

I think the algebra is correct, but I'm not sure the problem makes sense.  The formula says that at 1.2 sec after jump, the velocity will be 0, i.e. that velocity decreases after jump.  That doesn't make physical sense to me.  Please check the statement of the problem before accepting the answer given by the algebra!