Question

Una pelota recorre 20 m hacia la derecha y luego 10 m hacia la izquierda, todo en un lapso de tiempo de 10 s , cual es si velocidad y rapidez?

Answer 1

v = 1 i ^ m / s, v = 1 m / s

Step-by-step explanation:

In this problem we show the difference between vectors and scalars.

The average speed is

v = Δx / Δt

The bold are vectors

Δx = 20-10 = 10 i^ m

v = 10/10

v = 1 i ^ m / s

the unit vector indicates that the velocity is on the x-axis

The average speed is

v =Δx / Δt

v = 10/10

v = 1 m / s

in this case we have a scalar