To find the time, use the formula for the speed gained by uniformly accelerated body v = at. where "a" is the acceleration; t is the time; v is the speed. In your case a = 5 m/s^2, v = 100 m/s are given, so t == = 20 seconds. Having the acceleration and time, you can now find the distance d = = = = 5*200 = 1000 meters. ANSWER