Its very normal and the only reason he gets all physical is because he doesnt have the vocabulary yet to express how mad he is. When he gets mad at his toy this is your opportunity to let him know you understand and at the same time say what you think he wishes he could say. "This darned thing wont work right... hmm, let me try to do this with it and see if that works..." Role play it with verbal and your physical ability to make the toy do what it's supposed to do, thus teaching him how to handle it himself. He's only one year old, it wasnt long ago his only verbal skill was to cry to let you know he needed something. Learning language skills really, really helps with behavior. Just keep talking to him and teaching him the language, it's his best tool.. We all need to be able to vent, and when we cant (even with adults) it can be very frustrating.