physics

posted by .

a motorist travels at 80 km/hr for 3 hours and 2 more hours at 100 km/hr. what is the average speed for the whole trip?

  • physics -

    figure the distance on each leg, then add.
    average speed=totaldistance/totaltime

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A motorist travels 90 km at 120km/h , and 70km at 75km/h . What is the average speed for the trip?
  2. Algebra

    Susan drove for 2 hours at 85 km/hr and then for 3 hours more at 95 km/hr. What was her average speed for the entire trip?
  3. Physics

    A motorist travels 1600 m at 80 m/s and 750 m at 100 m/s. What is the average speed of the motorist for this trip.
  4. algebra

    a motorist left a city for a 295 mile. 7 hour trip. for the first part of the trip, the average speed was 40mph. for the remainder of the trip, the average speed was 55mph. How long did the motorist drive 55mph
  5. maths

    A motorist travels a certain distance x in five hours at an average speed of 90km/h.what average speed must she maintain to cover the distance in 4 hours?
  6. Science

    On a 120 km trip a motorist travels 60 km at 60 km/h. How fast must the motorist go for the next 60km in order to average 120km/h for the whole trip?
  7. Physics

    A motorist travels 160km at 80km/hr and 160km at 100km/hr. What is the average speed of the motorist for this trip?
  8. Math

    Makena drives 3 hours at an average speed of 45 miles per hours. Then she drives 5 hours at an average speed of 55 miles per hour. what is her average speed for the whole trip?
  9. math

    A motorist drive 360 km from one city to another in 4.2 hours but makes the return trip in only 3 hours.What are the average speed and average velocity at each half?
  10. Algebra 2

    You and a friend take turns driving on a 450 mile trip. Your friend drives for 3.5 hours at an average speed of 60 miles per hours. What must your average speed be for the remainder of the trip if you want to reach your hotel in 4 …

More Similar Questions