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## Homework Statement

a. A sprinter can accelerate with constant acceleration for 2.28s before reaching top speed.

He can run 148.0m in 16.6s. What is his speed as he crosses the finish line?

b. A car accelerates at 2.15m/s2 along a straight road.

It passes two marks that are 29.5m apart at times t=3.95s and t=4.85s.

What was the car's velocity at t=0?

c. You've attached a rocket to the rear of a small car

The rocket provides a constant acceleration for 4.68s.

As the rocket shuts off, a parachute opens and slows the car at a rate of 3.43m/s2.

The car passes the judges' box, 878.0m from the starting line, exactly 14.0s after you fire the What is the car's speed as it passes the judges?

## Homework Equations

## The Attempt at a Solution

I don't even know where to start I'm just too stressed