W h y Safety Belts Work
When you ride-in or
on anything, you
go
-as fast
as
it
goes.
1.
For example, if the bike is going 10
-mpfi (16 km/h), so is the child.
2.
When the
bike
hits the block, it
stops. But the child keeps going!
3 .
Take
the
simplest
"car."
Suppose
it's
just- a seat
on wheels.
. - a