Question

Using information about natural laws, explain why some car crashes produce minor injuries and others produce catastrophic injuries.

Answer 1

It is due to collision and conservation of momentum.

When you hit your head against the wall(do not try or you will be injured)it bleeds sometimes and sometimes a small pain,some times nothing happens just a touch only.

So what can you conclude here?
When your momentum is greater head will be more injured,similar fashion for car crashes.

Hope you understood.
Thanks.
Tripathy