84. The equation relating the pressure and volume of a gas with its thermodynamic temperature T is given by pV = KT, where k is a constant. What are the base units of K? A. no units, because k is a constant B. kg m2 s? K C. kg m? s?K D. kg m s? K S

The position of a particle is given by s = 0.20t3 - 0.67t? - 2.96t + 4.92, where s is in feet and the time tis in seconds. Plot the displacement, velocity, and acceleration as functions of time for the first 11 seconds of motion. After you have the plots, answer the questions as a check on your work. --+ s, ft -1 1 Questions: When t = 1.3 sec, v = ft/sec2 i ft/sec, a = i When t = 8.3 sec, v= ft/sec, a = i ft/sec2 The positive time at which the particle changes direction is i sec.

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An automobile traveling 95km/h overtakes a 1.30 km long train traveling in the same direction on a track parallel to the road. If the train’s speed is 75km/h. (a) how long does it take the car to pass it?, and (b) howfar will the car have traveled in this time? See diagram. (c) What are the results if the car and train are traveling in opposite directions? ( Show your work).