- #1

- 86

- 0

## Homework Statement

A speeding car has instantenous velocity of 1 m/s when a stopwatch reads 10 seconds. It has constant acceleration of 2 m/s^2.

What is the cars speed when it reaches the stopwatch reads 12 seconds.

## Homework Equations

x= (Vinitial)(DeltaT) + 1/2(a09deltaT)^2

I think this is the right equation for constant acceleration...

## The Attempt at a Solution

(1.0m/s)(2seconds) + 1/2(2m/s/s)(2)^2

2 + 4

= 6 m/s

This is a problem in my textbook, and the answer they give is 5 m/s. Am i using the wron equation? Or what am i doing wrong?