Question

A train takes 80min to travel from station P to Q and 40min to return from Q to P.If the distance between P to Q is 60km calculate :1)Average speed 2)Displacement 3)Average velocity of train

Answer 1

Answer:

average speed = 120/120 = 1 km/min

displacement = 0

average velocity = 0

Answer 2

Time = 80 mins to go

40 mins to come

Distance = 60km

average speed =120/120 mins = 2hrs

120/2= 60 km/hr

v.avg velocity = 0 km/hr