Shini Somara introduces us to the ideas of motion in a straight line. In this, THE FIRST EPISODE of Crash Course Physics, your host Dr. Shini Somara introduces us to the ideas of motion in a ...

In this diagram there are two forces, which, when added together give a resultant force of 30 newtons (N). Resultant force = 20 N + 10 N Resultant force = 30 N to the right 2.

What is shown on the velocity-time graph? Acceleration is shown by a straight rising line. Deceleration is shown by a straight falling line. Constant speed is shown by a horizontal line.

No, you’re not. As brusspup shows, each individual white dot is moving in a straight line! The trick here is two-fold: One is that the dots aren’t moving at constant velocity (you can see that ...