My experiences and observations
of forces and the laws of motion
Inertia: A body at rest tends to
stay at rest unless acted on by an
outside force.
• On my dad’s farm the
tractor stays at rest
until someone starts
the engine and drives
it around.
Inertia: A body in motion tends
to stay in motion unless acted
upon by an outside force.
• I watched Mike
Modano shoot the
hockey puck. It kept
going in a straight line
until it slammed into
the goal net. That
changed its motion to
a new direction and
then it stopped.
For every action there is an equal
and opposite reaction
• In my uncle’s factory,
I saw one gear turn
one way which caused
another gear to turn
the other way.
Force = Mass x Acceleration
• We went to the beach
to jump in the waves.
The big waves hit us
hard enough to knock
us down. The small
waves only made us
wiggle a little bit.