Question

A roller coaster car is moving 1.98 m/s

on flat ground, when it begins to
accelerate at 3.77 m/s². How much
time does it take to travel 45.8 m?
(Unit = s)
Watch your minus signs!
Entering

Answer 1

4.43 s

Step-by-step explanation:

d = do + vot + 1/2 at^2

45.8 = 0 + 1.98 (t) + 1/2 (3.77 )(t^2) re-arrange to

1.885 t^2 + 1.98t - 45.8 = 0 Use Quadratic Formula to find t= 4.43 s