Hello everyone! I was watching a Professor Lewin lecture from about 15 minutes onwards Where he talks about striking a block off-center. What is confusing me is that it seems that by striking it in a different place you are giving it more energy. This feels wrong to me because you are giving it the same impulse. Is it perhaps because we assume that during the impulse the block remains in the same place? Thanks in advance, Frank A bit more description: When you hit the block through the center the velocity = Impulse/Mass. This is the same for when you hit it off-center but it also has rotational energy.