(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A motorcycle cop, parked on the side of a highway is passed by a woman in a red Ferrari 308 GTS doing 90km/h. After a few attempts to get his cycle started, the officer roars off 2.00s later. At what average rate must he accelerate if 110km/hr is the top speed and he is to catch her just at the state line 2.00km away?

2. Relevant equations

3. The attempt at a solution

I first started this question by showing what i know and making all unit conversions i need to.

1)

Cop for first 2 sec

vi= 0 km/hr

Pi=0 m

a=0

Ti= 0

Tf= 2

Cop after 2 sec

vi= 0 km/hr

vf= 110 km/hr

pf= 2000 m or 2 km

Ti= 2

a= X

Woman

vi= 90 km/hr

Pi= o m

a= 0

Tf=2

2) Convert the km/hr into m/s

(110 km/hr) X (1000 m/hr) X (1/60 Min) X (1/60 Sec) = 30.56 m/s (COP)

(90 km/hr) X (1000 m/hr) X (1/60 Min) X (1/60 Sec) = 25 m/s (woman)

3) Then find out how long it takes the Woman to get to the state line.

Woman

Position Final = Vi(T)

2000m = 25(T)

T = 80 sec

4) This means that the cop has 78 sec to catch her because it takes him 2 sec to start his bike.

thats all i got...

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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