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**1. Homework Statement**

A speeding car traveling at 20m/s passes a stationary police car, which immediately begins to accelerate at 2.0 m/s. The speeder travels with uniform motion until the police car is along side. How long does it take the police car to catch up to the speeder.

Speeder:

v1: 20m/s

Police Car:

v1: 0 m/s

a: 2.0 m/s^2

**2. Homework Equations**

v=d/t

d=v1*t + 0.5*a*(t^2)

**3. The Attempt at a Solution**

If figure the displacement between the cars should be 0 when they meet so

Ds = displacement of speeder

Dp = displacement of police

Ds + Dp = 0

(20)t + 0.5(2.0)t = 0

Thats my attempt its a pretty sorry one but I really need help.