Final answer:
To calculate the time a skateboard takes to roll down a ramp, divide its final velocity by its acceleration, resulting in approximately 1.90 seconds.
Step-by-step explanation:
To determine how much time it took the skateboard to roll down the ramp, we can use the formula t = ∆v / a where t is time, ∆v is the change in velocity, and a is acceleration. The skateboard's final velocity (∆v) is 7.26 m/s and it accelerated at 3.83 m/s², so the time (t) it took to reach the bottom of the ramp can be calculated by dividing the change in velocity by the acceleration.
Applying the formula, we get:
t = 7.26 m/s / 3.83 m/s², which equals approximately 1.90 seconds.