p02_007

Fundamentals of Physics,Vol 1 (Chapters 1 - 20)

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
7. Using x =3 t 4 t 2 + t 3 with SI units understood is efficient (and is the approach we will use), but if we wished to make the units explicit we would write x =(3m / s) t (4 m / s 2 ) t 2 +(1m / s 3 ) t 3 . We will quote our answers to one or two signiFcant Fgures, and not try to follow the signiFcant Fgure rules rigorously. (a) Plugging in t = 1 s yields x =0.W ith t =2sweget x = 2 m. Similarly, t = 3 s yields x =0and t = 4 s yields x = 12 m. ±or later reference, we also note that the position at t =0is x =0. (b) The position at t
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online