An object moves along a straight line path A to B in 40 min and B to A in 30 min. Find average speed
for entire journey. The distance between A and B is 10 Km.
Answers
Answered by
4
average. speed total distance
---------------------
total time
therefore av speed = 20000metre
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4200 seconds
= 4.76 m/s
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total time
therefore av speed = 20000metre
-------------------
4200 seconds
= 4.76 m/s
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Answered by
4
total distance =(10+10)Km
=20km
total time taken for whole journey = (40+30)min
= 70 min
= 70/60 hr
then, Average speed = 20 ÷ 70/60 km/hr
= 120/7 km/hr
=20km
total time taken for whole journey = (40+30)min
= 70 min
= 70/60 hr
then, Average speed = 20 ÷ 70/60 km/hr
= 120/7 km/hr
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