A police car moving at 140 km/hr chases a speeding car at 110 km/hr. How much closer to the speeding car does the police car get each time??

Question

souvik · Answer

do u know relative velocity...?

anonymous · Answer

no :(

souvik · Answer

a simple example....when u are going by bus or train..u see the trees or buildings beside the road moving backward...

anonymous · Answer

yes. then?

shamim · Answer

if u r going by a bus  10 km/h and a track is going by 7 km/ h along the same way

shamim · Answer

then ur relative velicity with respect to that track will b 3 km/h

souvik · Answer

mathematically, when u calculating someones motion relative to you ...then you have to subtract your velocity from the velocity of someone using vector rules...

shamim · Answer

can i say more example for ur better understanding

anonymous · Answer

So, 140km/hr - 110km/hr
That makes 30km/hr?

souvik · Answer

yes..the police car is coming towards the speeding car with a velocity of 30km/hr

anonymous · Answer

do i have to divide 30km/hr by 60 mins?

souvik · Answer

yes...do that and convert km to meter

anonymous · Answer

so, the police car gets 0.50km/min

anonymous · Answer

Thank you Souvik and Shamim! :)

souvik · Answer

you are welcome..:)

shamim · Answer

welcome