What the above comment said…or you can add “projectile movement” component to any object and then do as the above stated. Select the projectile movement component, on the right hand detail panel look for an option to set gravity scale (default is 1) make it 0 and your projectile will move forward with no effect of gravity. You of course need to set its initial velocity for it to move (the default is 1,0,0) so 1 unit in the forward direction of the component. You can mess around with the physics settings as well. So overall, the answer is yes! There are many easy ways to get something to “float”.
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