Question

A projectile is fired into the air, and it follows the parabolic path shown in the drawing, landing on the right. there is no air resistance. at any instant, the projectile has a velocity v overscript rightwards harpoon with barb upwards endscripts and an acceleration a overscript rightwards harpoon with barb upwards endscripts. which one or more of the drawings could not represent the directions for v overscript rightwards harpoon with barb upwards endscripts and a overscript rightwards harpoon with barb upwards endscripts at any point on the trajectory?

Answer 1

Answer : Neither option A nor option C could represent the directions for v overscript rightwards harpoon with barb upwards endscripts and a overscript rightwards harpoon with barb upwards endscripts at any point on the trajectory.

As the acceleration is always downward, and also in this question the only force acting is the projectiles weight. Therefore, it is experiencing downward acceleration at  any point of time.