contestada

A particle moving along the x-axis has its velocity described by the function vx =2t2m/s, where t is in s. Its initial position is x0 = 1.3 m at t0 = 0 s

Respuesta :

Answer:

Follows are the solution to this question:

Explanation:

In point a:

Place of particles

[tex]X(t)=\int V_{x}(t)dt[/tex]

       [tex]=\int 2t^{2}dt\\\\=\frac{2}{3}t^{3}+C[/tex]

[tex]\to t=0\\\\ \to X(0)=2.3 \ m[/tex]

[tex]\to X(0)=0+C\\\\ \to C=2.3\ m[/tex]

[tex]\to X(t)=( \frac{2}{3})t^3 + 2.3\\\\ \to t=2.2\\\\\to X=( \frac{2}{3})\times 2.2^3 +2.3 \\\\[/tex]

        [tex]= \frac{2}{3}\times 10.648 +2.3\\\\= \frac{21.296}{3}+2.3\\\\ = 7.09+2.3\\\\ =9.39\\\\ =9.4\ m[/tex]

In point b:

when [tex]t=2.2 \ s[/tex]

the Particle velocity  [tex](V)=2 \times 2.22 =9.68\ \frac{m}{s}[/tex]

In point c:

Calculating the Particle acceleration:

[tex]\to a=\frac{dV}{dt} =4\ t\\\\\to t=2.2 \ s\\\\\to a=4\times 2.2 =8.8 \ \frac{m}{s^2}[/tex]

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