a projectile is fired from the surface of the earth with a velocity of 5ms-1 and angle teta with the horizontal. another projectile fired from another planet with a velocity of 3 ms-1 at the same angle follows a trajectory which is identical with the trajectory of the projectile fired from the earth
For another planet gravitational pull will be different. So the projectile may behave differently if given same initial velocity and angle of inclination. So according to the different value of acceleration due to gravity the path may change. It may be a expanded parabolic or a compressed one. You can verify the trajectory by finding y vs x for the projectile.