Final answer:
The student asked how long it will take for a car to stop given the deceleration and distance. By first calculating the initial velocity using the given deceleration and distance, the time can be determined using the velocity and the deceleration.
Step-by-step explanation:
The student's question is concerned with calculating the time it took for a car to come to a stop from a certain speed given the deceleration and the distance it traveled before halting. The formula given the initial velocity (vi), final velocity (vf), acceleration (a), and distance (d) is:
vf2 = vi2 + 2ad
Since the car comes to a stop, vf = 0. We'll need to solve for the initial velocity vi before we can find the time using the equation:
t = (vf - vi)/a
Assuming the problem provides the deceleration and distance, we'll calculate the initial velocity and then find the time using these equations.