The child will get more bruises and scapes sliding across, but the child being dropped is in danger of things like broken leg/ankle, shattered pelvis, or if he tries to break his falls with his hands - broken arm/wrists/fingers..
Someone's been watching too much Matilda, go to 1:00
http://www.youtube.com/watch?v=3EjSC5i5VQc&feature=related