James Prescott Joule 24 December 1818 – 11 October 1889 British 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!”

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 If, during this displacement, a force N acts on the particle, what is the work done by this force? A] 10 Nm B] 10√2 Nm C] -10 Nm D] Nm E] 0

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. For which of the three cases is the work largest? Or choose (E), all the same. For which of the three cases is the speed at the bottom greatest? Or choose (E), all the same. E C E

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