- #1

AviationFanBoy

- 15

- 0

## Homework Statement

A car traveling with a constant speed of 80km/hr passes a stationary motorcycle policeman. The policeman sets off in pursuit, accelerating uniformly to 80km/hr in 10 seconds and reaching a constant speed of 100km/hr in a further 5 secs. At what time will the policeman catch up with the car.

## Homework Equations

N/A

## The Attempt at a Solution

I figure if they catch up to each other, then assuming they began from the same point then their displacement will be equal to each other. Thus I did, the speeding car was doing 80km in one hour, and the cop was doing 100 km in one hour. Thus the cop would reach 80km displacement in 48 mins. (0.8 x 60 mins)