Inertia is the answer. When the car stops, anything that isn’t the car will keep going at the speed it was going previously. A body hitting a windshield at 70mph will break it. In spin outs, the inertia still acts on the unsecured bodies but we call it centrifugal force. Kind of like a washer doing a spin cycle flings the clothes to the edge of the drum.
manurosadilla t1_j257fba wrote
Reply to eli5 How are people ejected in a car accident (broadside)? by beachgirlDE
Inertia is the answer. When the car stops, anything that isn’t the car will keep going at the speed it was going previously. A body hitting a windshield at 70mph will break it. In spin outs, the inertia still acts on the unsecured bodies but we call it centrifugal force. Kind of like a washer doing a spin cycle flings the clothes to the edge of the drum.