Odpowiedzi

2010-01-13T16:37:12+01:00
Dane:
V = 100 km/h = 100000 m/ 3600s = 27,7 m/s
Z definicji przyspieszenia
a = ΔV / t
ΔV = V - V₀
w zadaniu V₀ = 0 więc
a = V/t

a)
a = V/t = 27,7 m/s / 17s = 1,63[m/s²]
b)
a = V/t = 27,7 m/s / 14 s = 1,97[m/s²]
c)
a = V/t = 27,7 m/s / 7,5 s = 3,69 [m/s²]
39 4 39
2010-01-13T16:37:39+01:00
100km/h=27,8m/s

a=V/t
a=27,8:17
a=1,64m/s2(kwadrat)

a=27,8:14
a=1,99m/s2

a=27,8:7,5
a=3,71m/s2
15 3 15
2010-01-13T16:38:22+01:00
Dane:

v = 100 km/h = 27 m/s

a) t = 17 s

a = v/t
a = 27 m/s/17 s
a = 1,6 m/s do kwadratu.

b) t = 14 s

a = v/t
a = 27 m/s/ 14 s
a = 1,9 m/s do kwadratu.

c) t = 7,5 s

a = v/t
a = 27 m/s/7,5 s
a = 3,6 m/s do kwadratu.
15 4 15