Question

Un automobil demareaza astfel incat atinge 100km/h in 2,77s. (362,77 aprox. 10) aflati acceleratia medie de demaraj.

Answer 1

Răspuns:

• a ≈ 10 m/s²

Explicație:

v₀ = 0 m/s

v = 100 km/h = 100 x 1000m / 3600s = 100000m / 3600s =  27,(7) m/s = 27,77 m/s

1 km = 1000m

1 h = 60 min = 60 x 60 = 3600 s

v = v₀ + at

a = Δv / Δt  = v - v₀ / Δt

a = 27,77m/s / 2,77 s ≈ 10 m/s²