KINEMATICS 2.17. the moment the wheels of the plane touched the runway, its speed was 40 m. The plane crossed the 1200 m road before stopping. If you know that S the plane moved evenly slowed down, determine: a) the average speed of the aircraft during braking; b) the time required for the aircraft to stop c) the distance traveled by the aircraft during the first 15 s of movement.

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Ithink it is c ,i hope i you

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.