Transcript document

What’s a Guy Gotta Do
Music by Joe Nichols
Words by me
What’s a guy gotta do to change his motion
around?
If I’m going straight, I’ll go straight through
town.
And if I’m going up, how will I ever come
down?
What’s a guy gotta do to change his motion
around?
Something’s motion is described by its
velocity:
Position’s change with time: Dx by Dt.
Changing speed or direction will create a Dv,
And acceleration’s Dv over Dt.
What’s a guy gotta do to change his motion
around?
If I’m going straight, I’ll go straight through
town.
And if I’m going up, how will I ever come
down?
What’s a guy gotta do to change his motion
around?
To begin, what does Newton’s first law say?
An object’s state of motion won’t just go
away.
Something already moving will continue on
its way,
And if it’s just at rest, then that’s how it’s
gonna stay!
What’s a guy gotta do to change his motion
around?
If I’m going straight, I’ll go straight through
town.
And if I’m going up, how will I ever come
down?
What’s a guy gotta do to change his motion
around?
For acceleration, Newton’s once again our
source!
a’s directly in proportion to applied net force,
But inversely to the mass of what you’re
pushing, of course.
Which will lead us to the lesson that we al
can endorse:
What’s a guy gotta do to change his motion
around?
Well, according to the laws that Isaac
Newton found
Any mass will resist speeding up or slowing
down.
So a guy needs a force to change his
motion around!
I said, a guy needs a force to change his
motion around!