A businessman reached his home by riding motorcycle within 5 minutes by travelling 9 kilometers distance.Find his average velocity.
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Given : Mohan takes 15 min to go from his home to school and 30 min for the return journey. distance between the school and the home is 4.5 km
To Find : average velocity and speed
Solution:
Mohan takes 15 min to go from his home to school and 30 min for the return journey
Total Time = 15 + 30 = 45 min
=> Total Time == 45/60 = 3/4 hrs
Total Distance = 4.5 + 4.5 = 9 km
Total Displacement = 0 km ( as he return back to original position)
Average Velocity = Displacement / Total Time
= 0/(3/4)
= 0
Average Speed = Total Distance / Total Time
= 9/(3/4)
= 12 km /hr
12 * 5/18 m/s
= 10/3
= 3.33 m/s
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