When landing, the plane touched the runway of the airfield at a speed of 216 km / h.

When landing, the plane touched the runway of the airfield at a speed of 216 km / h. After 20 seconds, its speed became equal to 5 m / s. Determine the acceleration of the aircraft while driving on the runway.

To calculate the acceleration of a given aircraft on an airfield runway, we apply the formula (slow motion): a = (V0 – V) / t.

Variables: V0 – speed at the moment of touching the landing strip (V = 216 km / h; in SI V = 60 m / s); V is the speed at the considered moment of time (V = 5 m / s); t – elapsed time (t = 20 s).

Let’s make a calculation: a = (V0 – V) / t = (60 – 5) / 20 = 2.75 m / s2.

Answer: The given aircraft moved along the landing strip with a constant acceleration of 2.75 m / s2.