I think that my dad abuses our family dog?

so me and my dad have been arguing over this pretty much every time it comes up. For example today, the dog jumps up on the table and eats 2 raw hamburgers. My dad then runs over to him after I get him off of the counter, take his body (he is a golden retreiver btw) slap is butt so that it makes a hard sound, during this my dog is starting to try to get away then throws him outside and down the stairs (which is about 4 steps steep). Then he goes inside and gets some soap and squirts it in his mouth. I hate it when he does this and it is not the first time he has done something like it. this scars me and makes myself and the rest of my family feel bad for the dog. While my dad is at work my dog (teddy) will still jump up on the counter, and try to get food, but when this happens we will just spray him with some water or bitter apple spray. i know we (myself, mom, brother and sister) are at fault as well for not following through with his punishment but my point is just that my dads approach is not succesfull (because he has continued to jump up) yet he believes it is. My dad thinks that it is ok for our dog to be afraid of him, whereas i think he should respect him. Do you think what my dad is doing is okay??