car travels hundred kilometre at a speed of 60 km per hour and returns with a speed of 40 kilometre per hour calculate its average speed and average velocity
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1
Answer:
48 km / hr
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4
Answer:
Distance = 100 km.
Speed= distance/time
S1= d/t1
60 km/hr= 100/t1
t1= 100/60= 5/3 hr.
S2= d/t2
40km/hr= 100/t2
t2=100/40
t2= 5/2 hr.
Average speed= total distance/ total time taken.
100+100/(5/3+5/2)
200/(25/6)
200× 6/25
8×6= 48
Answer is equal to 48 km/hr.
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