PHY 150 Ch 11 Prelecture Exam 2 Questions with correct answers
PHY 150 Ch 11 Prelecture Exam 2 Questions with correct answers What is the instantaneous velocity of a freely falling object 14s after it is released from a position of rest? - V = 9.8 m/s^2 x 14 s V = 137.2 m/s or 140 m/s Average velocity during 14s interval? - V = 137.2 m/s / 2 V = 68.6 m/s or 70 m/s How far will it fall during the 14s interval? - d = 1/2 x 9.8 m/s^2 x ( 14 s)^2 d = 960.4 m A car takes 1as to go from v = 0 to v = 21 m/s at approximately constant acceleration. If you wish to find the distance traveled using the quation d = (1/2) a t2, what value should you use for a? - a = v / t v = 21 m/s - 0 = 21 m/s
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