A car moving with constant acceleration covers the distance between two points 60m apart in 6s

1 Jahrs vor

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a) We can find the velocity of the car at the first point from the kinematic equation:

"d=\\dfrac{v_0+v}{2}t,""v_0=\\dfrac{2d}{t}-v=\\dfrac{2\\cdot 60\\ m}{6\\ s}-15\\ \\dfrac{m}{s}=5\\ \\dfrac{m}{s}."

b) We can find the acceleration of the car from another kinematic equation:

"v=v_0+at,""a=\\dfrac{v-v_0}{t}=\\dfrac{15\\ \\dfrac{m}{s}-5\\ \\dfrac{m}{s}}{6\\ s}=1.66\\ \\dfrac{m}{s^2}."

Answer:

a) "v_0=5\\ \\dfrac{m}{s}."

b) "a=1.66\\ \\dfrac{m}{s^2}."

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