Not bad
In fact it's a decent game. These ''shoot to get to your goal'' game tend to get repetitive quick and need to constantly better themselves. The physics work well enough to be smooth and the simple graphics do the job.
However the controls are not of the caliber of the better games in this genre. To click to get your power and angle, maybe difficult as it is, is MUCH better than what you have implemented.
However, I salute your attempt to make a game, you have potential and keep making games and sharpen your skills with (i hope) is constructive cristicism from my part and the part of other newground reviewers!