Yes, a 10 pound ball is a very light bowling ball and for kids it’s fine and adults, that can be some what light. Throwing a 10 pound bowling ball as hard as you can will still may have the bowling ball bounce off the pins because of the weight of the bowling ball. The heavier the weight, tends to have more pin action and knock down more pins so I would try a 14 pound bowling ball and if you can’t use that then try a 13 pound bowling ball.