Odpowiedź :
t = 20s
v = 72km/h = 20 m/s
s= ?; a=?
a= Δv/t = 20/20 = 1m/s²
s = v₀t +1/2at²
v₀ = 0 ⇒ v₀t = 0 ⇒ s = 1/2at² = 1/2 * 1 * 400 = 200 m
t = 20s
v = 72km/h = 20 m/s
s= ?; a=?
a= Δv/t = 20/20 = 1m/s²
s = v₀t +1/2at²
v₀ = 0 ⇒ v₀t = 0 ⇒ s = 1/2at² = 1/2 * 1 * 400 = 200 m