99_Physics ProblemsTechnical Physics

99_Physics ProblemsTechnical Physics - 100 P4.44 Motion in...

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

View Full Document Right Arrow Icon
100 Motion in Two Dimensions P4.44 (a) To an observer at rest in the train car, the bolt accelerates downward and toward the rear of the train. a =+ = == 2 50 9 80 10 1 250 980 0255 14 3 22 .. . tan . . . ms ±ms . to the south from the vertical 2 2 2 bg θ (b) a = . m s vertically downward 2 P4.45 Identify the student as the S ’ observer and the professor as the S observer. For the initial motion in S ’, we have = v v y x tan . 60 0 3 . Let u represent the speed of S ’ relative to S . Then because there is no x -motion in S , we can write vvu xx =′+= 0 so that ′=− =− vu x 10 0 . m s. Hence the ball is thrown backwards in S ’. Then, vv v yy x =′= ′= 31 0 0 3 . m s . Using vg h y 2 2 = we find h 10 0 3 2980
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

Ask a homework question - tutors are online