81_Physics ProblemsTechnical Physics

81_Physics ProblemsTechnical Physics - 82 Motion in Two...

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

View Full Document Right Arrow Icon
82 Motion in Two Dimensions P4.2 (a) ri j =+ 18 0 4 00 4 90 2 . ± .. ± tt t ej (b) vi j 18 0 4 00 9 80 2 . ± . ± ms . ms bg t (c) aj =− 980 . ± 2 (d) j 300 540 321 ± . ± s m m af a f a f (e) j 180 254 ± . ± m m s (f) ± m s 2 *P4.3 The sun projects onto the ground the x -component of her velocity: 500 600 250 .c o s . . ms −° = . P4.4 (a) From xt .s i n ω , the x -component of velocity is v dx dt d dt x == F H G I K J −= i n c o s ωω . and a dv dt t x x +5.00 2 sin similarly, v d dt y = F H G I K J + 4 00 5 00 0 5 00 c o s s i n . and a d dt y = F H G I K J = 2 i n c o s At t = 0, j i j + = + 0 0 0 m s cos ± sin ± . ±± and aij i j =+= + 0 0 0 22 2 m s 2 sin ± cos . ± . (b) rij j i j + xy t t . ± i n ± cos ± 400 m j + o s ± sin ± m ai j 2 i n ± cos ± m (c) The object moves in a circle of radius 5.00 m centered at
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