Home » 2011 » December » 01

# Daily Archives: December 1, 2011

## Average Speed

“A car travels from A to B with a speed of 30km/h and returns back to A with a speed of 50km/h.Find distance,displacement,average speed and average velocity ifdistance between A and B is 100km.”

Distance 200 m

Displacement 0

Average velocity 0

Average speed =$\frac{2v_{1}v_{2}}{v_{1}+v_{2}}$ = 37.5 kmph