Question

Ayuda porfa ese ejercicio :((​

Answer 1

Explicacion:

m =80 kg

Vo = 20 m/s

Vf = 0

d = 50 m

g = 10 m/s²

P = m g

a = ?

μ = ?

Formula:

d = Vf²  -  Vo² / 2 a

d = -  Vo² / 2 a

2 a d = -  Vo² 

a = - Vo²  / 2 d  =  -  (20 m/s)² / 2 (50 m) =   - 4 m / s²

F = m a = 80 kg ( - 4 m / s²)  = 320 N

P = m g = 80 kg (10 m/s²) = 800 N

μ = F/P = 320/800 = 0.4