2. A 1.2 kilometer - long train is travelling at a speed of 100 mi/hr. How long is the train as observed by a passenger who was left standing on the platform? Is length contraction observed? Explain your answer briefly.

A paratrooper falls with the velocity 4 m/s. During his motion, western wind blows with velocity of 3 m/s. The factual velocity of the paratrooper with respect to the ground is: Give the answer in m/s side note: How would I know what formula to use for this problem and what formula is needed for this problem?

Describe a means of transportation and a point-to-point travel route with which you are familiar.  Use this route to explain the difference between and the meaning of the following terms: distance, displacement, speed, velocity, and acceleration. Do not use a path with zero displacements; for example from home to work and back home. Identify those quantities which are vectors, and which are scalars.  Give magnitudes and direction from your example route as appropriate.