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Megha drives her car along a square field of side 10km along the perimeter. First side at the speed of 10kmph, second at the speed of 20kmph, third side at the speed of 30 kmph, then at 40kmph. Find the average speed of the total travel.
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- its about 19.2 km/h...
square has 4 sides so total dis tance is 40 km.
first side 10km by 10km/h so t=d/s=10/10=1h
2nd side 10 by 20 km/h so t=10/20=1/2h
3rd side 10 by 30 km/h so t= 10/30=1/3h
4th side 10km by 40 km/h t=10/40=1/4
avg .speed= d/t=40/(1+1/2+1/3+1/4)=19.2km/h - 12 years agoHelpfull: Yes(27) No(0)
- 19.2 total dist./total time
- 12 years agoHelpfull: Yes(8) No(0)
- ans will be
4x/5/24x=96/5 - 12 years agoHelpfull: Yes(1) No(0)
- 40/(1+1/2+1/3+1/4) =20
- 12 years agoHelpfull: Yes(0) No(4)
- i think ans is 19.2
- 12 years agoHelpfull: Yes(0) No(0)
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