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Physics 23 Online
OpenStudy (anonymous):

A Car travels from stop A to B with a speed 30 km/hr and then returns back to A with a speed of 50 km/hr.Find :- a) Displacement b) Distance c) Average Velocity d) Average Speed of the Car

OpenStudy (anonymous):

|dw:1408432896879:dw|

OpenStudy (anonymous):

we need time of travels to fine replacement an distance.

OpenStudy (anonymous):

@aryandecoolest

OpenStudy (anonymous):

ok see here the formula to find average speed, if at xkm/hr is the certain distance covered and same distance is covered at ykm/hr, then average speed= 2xy/x+y

OpenStudy (anonymous):

now average velocity=total distance/total time

OpenStudy (anonymous):

and displacement will be zero bcoz he is back to his initial positon....

OpenStudy (anonymous):

@aryandecoolest thanks once again

OpenStudy (anonymous):

anytime :) @Greaty

OpenStudy (anonymous):

but next time I won't thank u becoz i am tired..!! :)

OpenStudy (anonymous):

hahaha!! never mind @Greaty

OpenStudy (anonymous):

@aryandecoolest can u say the answers just to verify pls

OpenStudy (anonymous):

@Greaty what's your avg sped?

OpenStudy (anonymous):

37.5

OpenStudy (anonymous):

good, then next?

OpenStudy (anonymous):

No idea

OpenStudy (anonymous):

yeah so need to understand since there is no time mentioned we cannot find out distance. @Greaty

OpenStudy (anonymous):

so what to do ?

OpenStudy (anonymous):

see the thing is.. find distance in terms of time. Like your distance traveled will be, D= 150T/8, where T=total time taken .

OpenStudy (anonymous):

please make sure ...problem is correct :) @Greaty

OpenStudy (anonymous):

i am confused i can't understand

OpenStudy (anonymous):

@Abhisar

OpenStudy (abhisar):

ok...let's start fresh

OpenStudy (abhisar):

a) Displacement: Since the car travels back to its origin point i.e A, displacement will be zero. Got it ?

OpenStudy (abhisar):

b)Distance: As @aryan said, we can not find the distance since time is not given

OpenStudy (abhisar):

There ?

OpenStudy (anonymous):

Oh now its clear.Thanks @Abhisar And @aryandecoolest :)

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