Question by CHYEAA: Hello, i have a science physics kinematics problem i need help on and i have a test tmr.?
A student travels by car from one city to another. She drivers for 30.0 min at 80.0 km/h, 12.0 min at 105 km/h, and 45.0 min at 40.0 km/h and she spends 15.0 min eating lunch and buying gas. Determine the average speed for the trip.
Thanks alot! please show ur steps i really need to know how you get your answer. i will greatly appreciate it. =)
Answer by Bob
Figure out distance for each segment
Add up the distances.
Add up the times plus the lunch break
Divide total distance by total time for the average speed.
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