A body covers half it's journey with a speed of 'a' metre per second and another half with a speed of 'b' metre per second calculate the average speed of the journey during the whole journey
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let journey be X
S1 = a , d=X/2
s=b,d=X/2
a=(X/2)*1/t
b=(X/2)*1/T1
t=(X/2)/a
T1= (X/2)/b
total time = X/2a+X/2b
total distance = X
AVG speed = a+b/ab
S1 = a , d=X/2
s=b,d=X/2
a=(X/2)*1/t
b=(X/2)*1/T1
t=(X/2)/a
T1= (X/2)/b
total time = X/2a+X/2b
total distance = X
AVG speed = a+b/ab
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