Question

a car travels 50 km in 25 km /h and then travels 60km with a velocity 20 km/h and then travels 60km with a velocity 20 km/h in the same direction. find the velocity​

Answer 1

Answer:

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Answer 2

Explanation:

for 1st 50kms, velocity = 25km/h

=>time taken= distance/speed= 50/25 = 2hr

for next 60kms, velocity = 20km/h

=>time = 60/20= 3hr

for another 60km, velocity= 20km/h

=>time=60/20= 3h

as the direction of car was same all the time,

total distance covered= 50+60+60=170km= total displacement

and total time = 2+3+3 =8h

so avg. velocity = displacement/time = 170/8 = 21.25km/h