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Dane :
t=0,5 min =30s
V p= 36 km /h = 36 000 m / 3600s = 10 m /s
Vk = 15 m /s
15m/s - 10 m/s =5 m/s
a = delta v : delta t
a = 5m/s : 30s = ⅙ m/s²
Mam nadzieję,że pomogłam ;D
36km/h=36×(1000/3600)=10[m/s]
36km/h=10m/s
ΔV=15-10=5[m/s]
|a|=ΔV/t
|a|=5/30=1/6[m/s²]
Dane:
V1 = 36km/h = 10 m/s
v2 = 15m/s
t= 0,5min = 30s
teraz trzeba podzielic przyrost prędkości przez czas
5m/s : 30s = 1:6 m/s2