Question

A fighter jet is being tested before it is delivered. The jet took off and had its initial velocity of 280 m/s. As the pilot ask permission from the flight control to test its capacity the jet reached its final velocity of 1250 m/s in just 20 seconds. What is the acceleration of the fighter jet?

Answer 1

48.5 m/s².

Step-by-step explanation:

We can use the following kinematic equation:

`\displaystyle v_f = v_i + at`

Substitute in the appropriate values and solve for acceleration a:

`\displaystyle \begin{aligned} (1250\text{ m/s}) & = (280\text{ m/s}) + a(20\text{ s}) \\ \\ a & = 48.5\text{ m/s$^2$} \end{aligned}`

Therefore, the acceleration of the fighter jet was 48.5 m/s².