A car travels to the left at a steady speed for a few seconds, then brakes for a stop sign. Draw a complete motion diagram of the car.
Solution:
Model
Represent the car as a particle.
Visualize
The dots are equally spaced until brakes are applied to the car. Equidistant dots on a single line indicate constant average velocity. Upon braking, the dots get closer as the average velocity decreases, and the distance between dots changes by a constant amount because the acceleration is constant.