How would one add bumpiness/bounciness to a motion animated in blender. For example, if I were to model a car moving on a road as a POV or a roller coaster from POV. I am currently working on a roller coaster, but I am asking this as a general question, how would one add the random bumpiness to anything moving on the road/tracks ?
You could do this by adding the noise modifier to you animation.
1) Open the property’s tab in the graph editor and select the animation you want to add the bumpiness to 2) Go the modifiers tab and select noise
You can read more about the noise modifier and other fcurve modifiers here
Note: Don’t add the modifier to the f-curve that controls the direction your object is going. For this particular problem add keyframes to your Y and Z locations of the car (assuming that car is moving along the X direction of the path) and then add noise to f-curves for Y and Z locations.