I actually have a few doubts:
1. In the second last part of the last question, how did u prove that the maximum speed was between 100 and 150... Do you draw a tangent or something??
2. In the Hooke's Law question, they say the value of k is approximately 20, but the closest value im gettin is 16... And then I used the same value of k to calculate everything else....Is that right??
3. In the MCQs, the last one - Ductile can also be called hard, rite??
Sm1 anwer me, I'd appreciate it.....
Thanks