A projectile is an object that is under the sole influence of gravity as it travels through the air. It accelerates downward during its entire flight through the air, increasing its vertical speed by 9.8 m/s each second of travel. There is no horizontal acceleration; the horizontal velocity remains constant throughout its flight.
 

There are four representations. You must choose which one is NOT consistent with all the others. Here's information about each representation:

Acceleration and Force Vector Diagrams: In the case of acceleration and force vector diagrams, it is important that the diagram show that the acceleration and force vectors are directed downwards and not changing in magnitude. This is consistent with a projectile having a downward acceleration and a net force that is constant in magnitude.

Velocity-Time Data Tables: A projectile has a constant horizontal velocity and a vertical velocity that is changing by -9.8 m/s each consecutive second. Inspect the data table to insure that the numbers reveal these two characteristics.

Displacement-Time Data Tables: A projectile has a constant horizontal speed. This means that the distance traveled ater each consecutive second will be increasing by a constant amount. A projectile has a vertical acceleration. This means that the vertical displacement will be increasing but the amount it increases by will be increasing. That is to say, the increment of change in d_y values from one row to the next will not be the same increment. 

Verbal Descriptions: The Fundamentals section of this page describes the basic characteristics of a projectile's motion. Read carefully and read closely to see if the verbal description is consistent with these basic principles of motion.