James Prescott Joule 24 December 1818

1
James Prescott Joule 24 December 1818 11
October 1889British Physicist and Brewer
It is evident that an acquaintance with natural
laws means no less than an acquaintance with the
mind of God therein expressed. Nothing beats
a warm beer on a Friday afternoon!
2
If a particle moves from to
in 5 seconds, what is its
displacement? (Coordinates are in meters.)
A 2 m/s B -2 m/s C 10 m D m E
m/s
3
The object falls/slides to the bottom of the
cliff/hill. For which case, a or b, is the work
done on the object by all forces larger (more
positive)? Or choose (E), the work is the same.
E
For which of the three cases is the work largest?
Or choose (E), all the same.
C
For which of the three cases is the speed at the
bottom greatest? Or choose (E), all the same.
E
4
You throw a stone from a bridge with speed v. In
which case does it hit the ground with the
highest speed v ?(Ignore air resistance.)
A When thrown straight up B When thrown
straight down C When thrown horizontally D
All give the same speed when hitting the ground