may look like an ordinary guy, but he's doing good physics in zero gravity.
and stopping - pushing and pulling. Sometimes it's easy and sometimes it's difficult.
What's happening in these examples?
you wanted to make car crashes less dangerous would you alter the speed limits
or alter the cars? Here is a crash test - what's happening?
the car has broken down it's good to have friends! So remember, when you start
driving, always take some mates along in the back to push you around, saves
on fuel too!
a look at some or all of these movies - they each show different aspects of
forces and movement. You can just watch the movies or use the controls to delve
a bit deeper.