a look at some or all of these movies - they each show a different force and
different resulting movement. What do you think is happening - and why? Type
in your explanations and compare with others.
do cars and concrete definitely NOT mix?
and stopping - pushing and pulling. Sometimes it's easy and sometimes it's difficult.
What's happening in these examples?
might not be Beckham - but the principle is the same.
out Tiger Woods!
do cars and people definitely NOT mix?
you get something for nothing?