aryanramdam152
aryanramdam152 aryanramdam152
  • 23-01-2021
  • Physics
contestada

starting from rest has and acceleration 0.3 m/s , calculate the velocity and distance travelled by a car after 2 minutes.​

Respuesta :

victorcarlos346
victorcarlos346 victorcarlos346
  • 23-01-2021

Answer:

[tex]v(t=120)=36m/s\\\\d(t=120)=2160 m[/tex]

Explanation:

t=2minutes = 120 seconds:

t=120s

a=0,3m/s²

The cart starting from rest, then: vo=0m/s

We know that:

[tex]v(t)=vo+at[/tex]

[tex]v(t)=0,3t[/tex]

After t=120 s the velocity are:

[tex]v(120)=0,3*120\\v(120)=36m/s[/tex]

We know that:

[tex]d(t)=do+vo*t+\frac{a}{2}*t^{2}[/tex]

vo=0m/s

do=0m/s

The distance after t=120s are:

[tex]d(120)=0,3*\frac{120*120}{2} \\d(120)=36*60\\d(120)=2160 m[/tex]

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