posted by .

A car moves a distance of 200 km. It covers the first half of the distance at speed 40 km/h and second half of the distance by speed v. The average speed is 48 km/h. Find the value of v

  • physics -

    Total time = 100/40 + 100/v = 200/48

    100/v = 4.167 - 2.500 = 1.667 hours
    v = 60 km/h

  • physics -


Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A runner, beginning at rest, completed a 50 m run with a final speed of 6 m/s. Assuming constant acceleration. a) What was the average speed of the runner?
  2. physics

    a patrol of timing paths each vehicle needs to travel the first half of the distance at a speed of 140 km / h. if the speed limit is 80km / h. which should be the highest average speed of the car in the second half of the section, …
  3. physics

    A baseball leaves a pitcher's hand horizontally at a speed of 115 km/h. The distance to the batter is 18.3 m. (Ignore the effect of air resistance.) (a) How long does the ball take to travel the first half of that distance?
  4. physics

    a car travels first half distance between two places with average speed of 30 km per hour and remaining half with a speed of 50 km per hour what is the average speed of the car is A 37.5KM/hr B 10km/hr //c// 42km/hr D 40km/hr
  5. physics

    A particle moves half distance by 20 m/s and stay half distance moves by 30 m/s. Average speed of total journey should be?
  6. physics

    a car moves from A to B covering a distance of 1000km it covers the first 300km at 60km/h the next 400km at 80 km /h at what speed it should it cover the remaining distance so that achieve an average speed of 70km/h?
  7. math

    Ling lives 2 miles from school. It took him 15 minutes to bike from school to home. The first half of the distance he biked at a speed of 12 mph. What was his speed for the remaining distance?
  8. physics

    A car moves for half of its time at 80km/hr and for rest half of timeat 40km/hr. Total distance covered is 60km.What is the average speed of car
  9. Physics (Help Plz)

    Ilya and Anya each can run at a speed of 8.00 mph and walk at a speed of 3.50 mph . They set off together on a route of length 5.00 miles . Anya walks half of the distance and runs the other half, while Ilya walks half of the time …
  10. Math Algebra

    A drive took some hours to travel from Rome to Milan. His average speed for the whole journey was 80 km/hour. For the first half of the journey he traveled at an average speed of 50km/hour. Find his average speed for the second half …

More Similar Questions