Question

A) 5 m/s e 5 m/s

B) 10 m/s e – 10 m/s

C) 10 m/s e 5 m/s

D) 5 m/s e – 10 m/s

E) – 5 m/s e – 5 m/s

Answer 1

AB

V = s - so / t - to

V = 20 - 10 / 2 - 0

V = 10 / 2

V = 5m/s

CD

V = s - so / t - to

V = 10 - 30 / 6 - 4

V = - 20 / 2

V = - 10m/s

R = Letra D.