Question

Calculate the acceleration of airplane that starts at rest and reaches a speed of 45 m/s in 9 seconds.

Answer 1

$Given:\\v_e=45 \frac{m}{s} \\v_0=0\\t=9s\\\\Find:\\a=?\\\\Solution:\\\\a= \frac{\Delta v}{t} \\\\\Delta v=v_e-v_0\\\\a= \frac{v_e-v_0}{t} \\\\a= \frac{45 \frac{m}{s}-0}{9s} =5 \frac{m}{s^2}$