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average speed = 2v1v2/v1+v2= 2{40}{20}/[40}+{20}= 26.66
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If an object moves half distance with v1 velocity and next half with v2 velocity then average velocity = 2v1v2/v1 + v2
=> here v1 =40km/h
v2 = 20km/h
avg velocity = 2 x 40 x 20/ 40 + 20
=> 1600/60
=> 26.67 km/h
=> here v1 =40km/h
v2 = 20km/h
avg velocity = 2 x 40 x 20/ 40 + 20
=> 1600/60
=> 26.67 km/h
1Ayush786:
but it has ask average speed
not Vav
both are same in magnitude as it is going in straight line motion
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