SAMPLE: History
Film Science Questions for A Knight’s Tale 11
1. William receives what impulse from Roland and Wat if they give him a 150 N push for 1.4 s?
2. During sword practice, William’s 2.3 kg sword moving at 3.6 m/s contacts Wat’s 2.1 kg sword moving
toward his at 2.3 m/s. After contact, Wat’s sword rebounds at 0.5 m/s. What about William’s?
3. As William is towed on the wagon, he passes 12.6 trees in 3.2 s. Find the frequency and period.
4. What work is done on William and the wagon if a 270 N force moves him at 1.6 m/s for 25 s?
5. The 70 kg, 3 m wide quintain spins at 4.7 m/s. What is its angular momentum?
6. What is the evidence William’s visor received an impulse from his opponent’s lance?
7. a) Draw a t-p graph for Chaucer’s motion in the first few moments after we first meet him.
b) How would we find his speed from the t-p graph?
8. Find the power rating of a peasant who does 168 J of work on a box by dragging it at 0.8 m/s for 25 m.
9. Why can we say the hoof marks of William’s horse are instantaneous position marks?
10. a) As William and the girl converse in the church, find the echo time of a sound wave in 190 air if the
a nearby wall is 25 m away.
b) If the girl makes a 300 Hz sound, find the wavelength.
11. Just before William’s lance breaks on Lord Mortimer, his horse carries him at 4.2 m/s. If a splinter
flies ahead at 1.6 m/s, find the splinter’s speed compared to: a) the horse b) a spectator.
12. A horse rears and then gallops down the lists. Name its: a) point of reference b) frame of reference.
13. At the end of three seconds, a warhorse accelerating at 0.8 m/s2 will reach what speed?
14. If William’s horse accelerates for eight seconds while moving 50 m, what is its final speed?
15. What is the final speed of a horse that accelerates at 1.1 m/s2 for a distance of 13 m?
16. A horse moving at 0.5 m/s will travel what distance while accelerating at 1.2 m/s2 for 4 seconds?
17. A 10 kg sword swung at 4.6 m/s to the right clangs into a 9 kg sword swing at it at 3.2 m/s to the left.
After the impact, the second sword bounces back at 0.3 m/s. What is the speed of the first sword?
18. The 190 kg testing beam hits 85 kg William at 2.6 m/s to the right and stops. Find his speed.
19. A knight moving at 3.2 m/s toward another knight approaching at 3.6 m/s yells at 200 Hz. If the Tair
is 200, what frequencies are heard by the second knight during the approach, pass and retreat?
20. a) What is the momentum of William, 95 kg, moving at 2.7 m/s?
b) Count Adhenar’s lance bashing into him with 250 N for 0.8 s delivers what impulse?
c) What is William’s momentum change?
d) What is his new speed?
21. Would lances deliver more or less impulse by shattering on impact?
22. After being struck with a lance, what is the evidence a knight has received a large impulse?
23. The mini-rack did what work on William’s shoulder if its 80 N force moved it 1.7 cm?
24. a) During the dance, what wavelength is best magnified by a 26 cm long, 2 cm diameter horn (open
tube) in 230 air.
b) Find the frequency of this sound.
25. A 0.5 cm diameter, 200 cm long lute string produces a frequency of 400 Hz when it is tensioned to
18 N. The string would sound at what frequency if its diameter were 0.2 cm and its length were
100 cm?
26. A farrier using a pry bar pushes down 15 cm to bend up a section of armor 1.1 cm. Find the IMA.
27. If the ferryman pulls with 140 N to move the 3 000 kg ferry, what is the μ?
28. Did William do + or – work by climbing the stairs to see his father?
29. A 20 kg lance carried 3 m above the ground has what potential energy?
30. a) At 2.2 s, a horse is 5 m along the barriers; at 10.6 s, it is at 35 m. Find its average velocity.
b) How far would it gallop in 13 s?
c) Draw a t-v graph for the 13 s.
d) How could you find the distance the horse travelled from the t-v graph?