PHYS 101 Lecture 6: Chapter 3-10
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In this case, the acceleration is 1 m/s2. a = 1 m/s2 time (s) acceleration (m/s2) 10 1: the a(cid:272)(cid:272)eleratio(cid:374) due to gravity is (cid:1005)(cid:1004) (cid:373)/se(cid:272)(cid:1006). Note: neglect air resistance: the a(cid:272)(cid:272)eleratio(cid:374) due to gravity is (cid:1005)(cid:1004) (cid:373)/se(cid:272)(cid:1006). If an object falls from rest, its instantaneous speed at the end of the fifth second is: (cid:894)a(cid:895) (cid:1005)(cid:1004) (cid:373)/se(cid:272), (cid:894)(cid:271)(cid:895) (cid:1009)(cid:1004) (cid:373)/se(cid:272), (cid:894)(cid:272)(cid:895) (cid:1005)(cid:1004)(cid:1004) (cid:373)/se(cid:272), (cid:894)d(cid:895) (cid:1009) (cid:373)/se(cid:272), (cid:894)e(cid:895) i(cid:373)possi(cid:271)le to deter(cid:373)i(cid:374)e fro(cid:373) the give(cid:374) information. Note: neglect air resistance v = a t = 10 x 5 = 50 m/s: a ro(cid:272)k is dropped fro(cid:373) rest off of a high (cid:272)liff on another planet, planet x. There is no atmosphere, and thus no air resistance, on planet x. At the end of 1 second, the rock is moving at a speed of 6 m/s. At the end of 2 seconds, it is moving at 12 m/s.
