A bicycle racer sprints at the end of a race to clinch a

Question

Compute each part of given question:

Question: A bicycle racer sprints at the end of a race to clinch a victory. The racer has an initial velocity of 11.0 m/s and accelerates at the rate of 0.450 m/s² for 7.00 s.

Part A: What is his final velocity?

m/s

Part B: The racer continues at this velocity to the finish line. If he was 300 m from the finish line when he started to accelerate, how much time did he save?

s

Part C: One other racer was 5.00 m ahead when the winner started to accelerate, but he was unable to accelerate and traveled at 11.3 m/s until the finish line. How far ahead of him (in meters and in seconds) did the winner finish?

distance

m

time

s

Please give me an explanation for above question.