# The car, traveling at a speed of 190 km / h, began to brake evenly and after 10 seconds dropped the speed to 30 km / h.

December 29, 2020 | education

| **The car, traveling at a speed of 190 km / h, began to brake evenly and after 10 seconds dropped the speed to 30 km / h. What is the acceleration of a car?**

Consider a car-related system. At first, the car moved uniformly, but then, it is said, it began to brake with the same acceleration, therefore, equally slow. Then

V1 = V0-a * t

a * t = V0-V1

a = (V0-V1) / t = 16m / s ^ 2