Register
A train travels from Boston to New York. It travels at a speed of 180 km/h for two hours, speeds up to 200 km/h for the next four hours and then slows down to 120 km/h for the next six hours. What is the
66.4k views
4 votes
A train travels from Boston to New York. It travels at a speed of 180 km/h for two hours, speeds up to 200 km/h for the next four hours and then slows down to 120 km/h for the next six hours. What is the average speed of the train for this trip?

User Ahmad Nadeem
by
5.6k points

1 Answer

6 votes

Answer:

156 2/3 km/hr

Step-by-step explanation:

Average speed is found by dividing total distance by total time.

180 km/hr in 2 hrs is 360 miles

200 km/hr in 4 hrs is 800 miles

120 km/hr in 6 hrs is 720 miles

Total time is 12 hrs; Total distance 1880 hrs

Divide distance by time and you have 156 2/3 km/hr. This is your average speed.

User Sivaramakrishnan
by
5.5k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.8m questions

7.6m answers

Other Questions

How does the capacitance of a parallel plate capacitor change with the geometry of the capacitor?
What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? Resistance is directly related to length. Resistance is directly related to the square
Explaining Wave Speed through Different Media Explain why the speed of light is lower than 3.0 × 108 m/s as it goes through different media.
Indy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next 1,000 meters, 1 minute for the next 350 meters, and 3 minutes for the rest. Cindy’s average speed
A space station that does not rotate cannot simulate gravity for its occupants. A)True B)False From within a rotating reference frame, the centrifugal force simulates gravity. A)True B)False On a rotating
Link Copied!