a car travels at a speed of 90km/hr for 2 hours then at 60km/h for next 3h. Find the average speed of the car during the entire journey.
Pls answer with explanation and pls explain it well, I am not able to understand
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1
Answer:
Q: A car travels at 40 kph for 2 hours and 60 kph for 3 hours. What is its average speed?
40 kph * 2 hr = 80 km
60 kph * 3 hr = 180 km
2 hr + 3 hr = 5 hr
80 km + 180 km = 260 km
avg vel = 260 km / 5 hr
avg vel = 52 kph
QED
Answered by
1
Answer:
Actual distance travelled by Sachin and Sameer from A to E = AB + BC + CD + DE = 3 + 4 + 5 + 3 = 15 km
Displacement from A to E = AB + BD + DE = 3 + 3 + 3 = 9 km
Speed of the motorbike from A to E=Total distance travelled from A to ETotal time taken from A to E=151=15 km/h
Velocity of the motorbike from A to E=Total displacement from A to ETotal time taken from A to E=91=9 km/h
Yes, this can be called the average velocity of the motorbike from A to E.
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