Aroller coaster is traveling at 13 m/s when it approaches a hill that is 400 m long. heading down the hill, it accelerates at 4.0 m/s2. what is the final velocity of the roller coaster? round your answer to the nearest whole number.

The final velocity of the roller coaster is 58.0 m/s

Given data:

The initial speed of roller coaster is, u = 13 m/s.

The path length of hill is, L = 400 m.

The acceleration of coaster is, .

Since, the coaster is approaching to hill at variable speed. Then, apply the third kinematic equation of motion to obtain the final velocity (v) as,

Substitute the values as,

Thus, we can conclude that the final velocity of the roller coaster is 58.0 m/s.

Learn more about the kinematic equations here:

link

heats surface water up