The body was moving at a speed of 72 km / h. After a while, the body stopped.

The body was moving at a speed of 72 km / h. After a while, the body stopped. Find the displacement of the body considering the acceleration equal to -8 m / s2

To find the displacement of the body under given conditions of motion, we will use the formula: S = (V ^ 2 – V0 ^ 2) / 2a.

Values of variables: V – final speed (the body stopped; V = 0 m / s); V0 – initial speed (V0 = 72 km / h = 20 m / s); a – acceleration of the body (a = -8 m / s2).

Let’s perform the calculation: S = (0 ^ 2 – 20 ^ 2) / (2 * (-8)) = 25 m.

Answer: Before the stop, the body moved 25 meters.