1. Use basic laws of physics to explain the followingsituations:
a. Spiderweb has a greater tensile strength than steel, yet youcan snap a spider web very easily with your hand. Explain why thisis so.
b. Use Bernoulli's Principle to explain how the shape of anairplane wing creates a \"lift force.\"
c. Why is it easier to sew with a sharp needle than it is to sewwith a dull one?
d. Describe how the speedometer of your car is able to tell howfast the car is going.
