I need the solves of these questions

View Policies Current Attempt in Progress A sprinter explodes out of the starting block with an acceleration of +2.19 m/s2, which she sustains for 1.48 s. Then, her acceleration drops to zero for the rest of the race. What is her velocity at (a)t = 1.48 s and (b) at the end of the race? q1 Acceleration End of drops to zero race (a) Number Units C (b) Number i Units View Policies Current Attempt in Progress The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = Os is 2.4 s. Initial velocity vo Acceleration a (a) + 12m/s +3.0m/s (b) + 12m/s -3.4m/s? 92 (c) - 13m/s +2.9m/s? (d) -12m/s -3.1m/s (a) Final speed = (b) Final speed = (c) Final speed = i C (d) Final speed =