Velocity was reported using the time taken to complete the 400-meter swim, which consisted of going from the starting point to the other end of the pool and back for a total of four times. Because participants completed the swim where they started, their displacement would be zero, meaning ...
Two cars, initially 400 m apart, approach each other on a straight stretch of highway. The first car is traveling East at a constant speed of 25 m/s and the second car is initially at rest and accelerates to the West at 3.5 m/s^2....
Imagine doing the same thing with the heat and AC: you turn the furnace up to its maximum setting, and then you make it comfortable by turning on the AC at the same time. Or the same analogy in a car: you floor the accelerator at all times, and then to regulate your speed you ste...