Lesson 2 · Steepness is speed
Tilt the line, watch the car
Drag the slider to make the line steeper. Watch how the car moves. Then make it steep enough that the car covers 2 m every second.
Gradient
(2 − 0) ÷ 4 = +0.5 m/s
Watch what the car does as you change the line.
Goal: make the car move at 2 m every second (gradient = +2 m/s).