A train travels 20 km at a uniform speed of 60 km h- and the next 20 km at a uniform speed of 80 km h,
Calculate its average speed.
Answers
Answered by
1
A train travels 20km at a uniform speed of 60km/hr and the next 20km at a ... Calculate its average speed. ... 20 + 20 / 20/60 + 20/ 80 ... total distance traveled = 40 km
nikhilroy27:
need to find out average speed
Answered by
6
for 1st
D =20km
S=60km/h
T= D/S
T= 20km/60km/h
t=1/3h
again
t= 20km/80km/h
t= 1/4h
now averagespeed =40/7/12 =68.57 km/s
Similar questions