The car moved at a speed of 10 m / s, then turned off the engine and began braking with an acceleration

The car moved at a speed of 10 m / s, then turned off the engine and began braking with an acceleration of 2 m / s2. What is the distance covered by the car in 7 seconds since the start of braking?

The distance traveled by the car can be calculated using the formula:

S = V0 * t + a * t² / 2, where S is the path covered by the car (m), V0 is the initial speed of the car (V0 = 10 m / s), and is the acceleration of the car (braking, a = -2 m / s² ), t is the time of car movement (t = 7 s).

Let’s calculate the distance traveled by the car when braking:

S = V0 * t + a * t² / 2 = 10 * 7 + (-2) * 72/2 = 70 – 49 = 21 m.

Answer: From the beginning of braking, the car will cover a distance of 21 m.