Physics

If a car travel at an average speed of 80 km per hr for 20 min, and then slowed down to an average speed of 50 km per hr over the next 15 min. How far would it travel in total?

  1. 👍 0
  2. 👎 0
  3. 👁 124
  1. 80 km/h*(1/3 h) + 50 km/h*(1/4 h)
    = 80/3 + 50/4 km
    = 39.17 km

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    The average speed of a bicycle, an athlete and a car are 18 km/hr, 7 m/s and 2 km/min respectively. Which among these is the fastest and the slowest one?

  2. Math

    Devon travels 40 km to Edmonton by car, and then returns by bus. The average speed of the car is 20 km/h greater than the average speed of the bus. If Devon's total travel time is 54 min, what is the average speed of the bus?

  3. Calculus

    The position (feet traveled) of a car is given by the equation s(t)=(1/4)t^2+1 find the time when the car is going the same speed as its average speed over the interval 0 to 10 seconds t=0 t=2.5 t=5 t=10 Never I think it's either

  4. physics--drwls

    A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.77 m/s^2 for 15 s 2. Constant velocity for the next 2.05 min 3. Constant negative acceleration -9.47 m/s^2 for 4.39 s. (a)

  1. Physics

    A 3800 kg open railroad car coasts along with a constant speed of 8.60 m/s on a level track. Snow begins to fall vertically and fills the car at a rate of 3.50 kg/min. ignoring friction with the tracks what is the speed of the car

  2. Math

    A car traveled at a constant speed for 4 hours and covered 144.6 miles. It used 12 gallons of gas to travel this distance. How far did the car go in 1 hour? How far did the car travel on 1 gallon of gas?

  3. math

    The distance between towns M and N is 280 km. A car and a lorry travel from M to N. The average speed of the lorry is 20 km/h less than that of the car. The lorry takes 1 h 10 min more than the car to travel from M and N. (a) If

  4. sunshine

    Distinguish between instantaneous speed and average speed. A man drives a car a distance of 200km at an average speed of 44kmh-1. What must be his average speed fot the next 220 km if he is to cover the total distances in 9 hours?

  1. Calculus

    A race car is running practice laps in preparation for an upcoming race. To judge how the car is performing, the crew takes measurements of the car's speed S(t) (in miles per hour, or mph) every minute. The measurements are given

  2. Physics

    The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20

  3. Physics

    From t = 0 to t = 5.00 min, a man stands still, and from t = 5.00 min to t = 10.0 min, he walks briskly in a straight line at a constant speed of 2.3 m/s. (a) What is his average velocity vavg in the interval 2.000 min to 7.90

  4. Physics

    Sally travels by car from one city to another. She drives for 40.2 min at 80.0 km/h, 12.0 min at 105 km/h, and 45.0 min at 40.0 km/h. She spends 13.7 min eating lunch and buying gas. (a) Determine the total distance traveled in

You can view more similar questions or ask a new question.