A car travels 100 km at a speed of 60km/h and returns with a speed of 40km/h. calculate its average speed and average velocity.
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Answer:
Given Data
Distance = 100 km
Speed = 60km/h
Return Speed = 40km/h
Speed = distance / time
Forward speed = 100 / time
60 = 100 / time
time = 100 / 60
time = 1.6 h
Return speed = 100 / 40
time= 2.5 h
TOTAL TIME = 1.6+2.5
= 4.1 h
AVERAGE SPEED = TOTAL DISTANCE / TOTAL TIME TAKEN
AVERAGE SPEED = 200 / 4.1
AVERAGE SPEED = 200 / 4.1 = 48.78 km / hr
VELOCITY IS ZERO BECAUSE THERE IS NO CHANE IN POSITION
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