An airplane flies 450 meters in 3 seconds. What is its speed in m/s?

If a balloon is taken outside on a very cold day, what will occur?

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig