8. People feel afraid, or excited, when their speed or direction of motion is changing; that is, when they are accelerated . acceleration in speeding up S S 0-100km/h 12s 3.8s a a
10. What causes the sense of fear to people who are accelerating? The acceleration of an object cannot be enabled without a push or pull from another object. S S Newton’s 2nd law: F
12. An authentic example of in measuring force via acceleration interaction design MS X-Box 360 control for the next generation
13. Therefore, as long as we know the acceleration of a person experienced at each points along the track, we can orchestra the variation of fear factor. But how? We need one more knowledge …
17. 能量轉換 (between U & K ) Are they other forms of energies? 直指 : 能量守恆定律
18. Why, in the tragedy in the movie, did the train stop at the top of the loop? v=0 Because some of K+U is taken away by friction , in to heat . Heat (熱) , K( 動能 ) and U (位能) are three types of energies.