A car travels with a speed of 40km/s during 1st half of its distance and with a speed of 60m/s during the next half of its distance. what is the average speed of the car
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Let distance = 2x
For first half distance time taken = x/40 s
For second half distance time taken = x/60 s
total time t = x/40 + x/60 = x/24 s
avg. speed = distance/time
= 2x/x/24
= 24*2x/x
= 48 m/s
For first half distance time taken = x/40 s
For second half distance time taken = x/60 s
total time t = x/40 + x/60 = x/24 s
avg. speed = distance/time
= 2x/x/24
= 24*2x/x
= 48 m/s
best17:
hi afreefa
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