Oblicz przyspieszenie samochodu, który osiągnął prędkość 30 m/s wzdłuż drogi s=100m
v1 = 0 m/s
v2 = 30 m/s
S = 100 m
-----------------------------
a = ?
Mamy
v = v2 -v1 = 30 m/s
S = 0,5 a*t^2
v = a*t => t = v/a
--------------------------
S = 0,5 a*[ v/a]^2
S = 0,5 a*[ v^2/a^2]
2 S = v^2 / a
2 a S = v^2
a = v^2/ ( 2 S)
--------------------
a = ( 30 m/s)^2 : ( 2 *100 m) = 900 m^2/s^2 : 200 m = 34,5 m/s^2
Odp.Przyspieszenie samochodu a = 4,5 m/s^2.
================================================================
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
v1 = 0 m/s
v2 = 30 m/s
S = 100 m
-----------------------------
a = ?
Mamy
v = v2 -v1 = 30 m/s
S = 0,5 a*t^2
v = a*t => t = v/a
--------------------------
S = 0,5 a*[ v/a]^2
S = 0,5 a*[ v^2/a^2]
2 S = v^2 / a
2 a S = v^2
a = v^2/ ( 2 S)
--------------------
a = ( 30 m/s)^2 : ( 2 *100 m) = 900 m^2/s^2 : 200 m = 34,5 m/s^2
Odp.Przyspieszenie samochodu a = 4,5 m/s^2.
================================================================