The speed of a car going uphill in 10 seconds decreased from 10 to m / s. Determine vehicle acceleration

t = 10 s.

V0 = 10 m / s.

V = 5 m / s.

and – ?

Acceleration, and is called a vector physical quantity that shows how quickly the speed of the body changes. The acceleration of the body, a is determined by the formula: a = (V – V0) / t, where V, V0 are the final and initial speed of movement, t is the time during which the speed changes.

a = (5 m / s – 10 m / s) / 10 s = – 0.5 m / s2.

The sign “-” means that the acceleration of the body and directed in the opposite direction to the direction of the body’s velocity, the body is inhibited.

Answer: the car decelerates with acceleration a = 0.5 m / s2.