Andrea, a 61.0 kg sprinter, starts a race with an acceleration of 3.300 m/s2. If she accelerates at that rate for 13.00 m and then maintains that velocity for the remainder of a 100.00 m dash, what will her time (in s) be for the race?

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?