The acceleration of the roller coaster car is equal to 42.9 m/s².
<h3>What is the equation of motion?</h3>
The equations of motion of a moving object are the equation that described the relationship between acceleration, velocity, time, and displacement of an object.
The expression of the equations of motions can be written as shown below:

Given, the velocity at the top of the hill, u = 0
The distance covered by the roller coaster, S = 71 m
The time taken for the drop, t = 1.82 sec
The equation of motion: S = ut + (1/2) at²
71 = (0) (1.82) + (1/2)×a ×(1.82)²
a = 42.9 m/s²
Learn more about the equation of motion, here:
brainly.com/question/16982759
#SPJ1