Physics, 07.10.2019 19:30 nguyenhoangthienkim0

Aperson takes a trip, driving with a constant speed of 89.5km/h, except for a 22.0−min rest stop. if the person's average speed is 77.8km/h
, how much time is spent on the trip and how far does the person travel?
average speed:

let a body covered d1,d2,d3
distances in respective time intervals t1,t2 and t3.

.

then the average speed of the body is given by

average speed=total distancetotal time=d1+d2+d3t1+t2+t3.

Answers: 3

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Aperson takes a trip, driving with a constant speed of 89.5km/h, except for a 22.0−min rest stop. if...