A car initally, at rest, accelerates for 5.7 s and has a final speed of 13 m/s. what was the acceleration in this time?

In the preceding problem we saw that a person’s reaction time is generally not quick enough to allow the person to catch a $1 bill dropped between the fingers. The 16 cm length of the bill passes through a student’s fingers before she can grab it if she has a typical 0.25 s reaction time. How long would a billneed to be for her to have a good chance of catching it?

A car, initially at rest, accelerates at 3.45 m/s2 for 10.9 s. How far did in go in this time?

In a relay, a runner catches a baton at a running speed of 2 m/s and accelerates to 1.5 m/s2 thereafter. What distance does he cover after 3s?