The sled rolled down the mountain in 12 seconds. With what acceleration they descended and what is their speed

The sled rolled down the mountain in 12 seconds. With what acceleration they descended and what is their speed at the end of the slope. If its length is 36m. The initial speed of the sled is zero.

Data: t (duration of the sleigh rolling down the mountain) = 12 s; L (slope length) = 36 m; V0 (initial speed of the set sled) = 0 m / s.

1) Acceleration of the specified sleds on the descent: L = V0 * t + a * t ^ 2/2 = 0 + a * t ^ 2/2 and a = 2 * L / t ^ 2 = 2 * 36/12 ^ 2 = 0.5 m / s2.

2) Speed of the sleigh at the end of the slope: V = V0 + a * t = 0 + 0.5 * 12 = 6 m / s.

Answer: The sleds descended from the slope with an acceleration of 0.5 m / s2 and at the end developed a speed of 6 m / s.