ch04-p101 - 101. We adopt the positive direction choices...

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

View Full Document Right Arrow Icon
v yg t t y 0 2 1 2 15 1 2 98 45 217 = + = −+ = (. ( . ) ( . . . m) m / s s) s m/s. 22 The magnitude of the initial velocity is vv v xy 00 2 0 2 10 2 24 =+ = + = m/s) (b) The initial angle satisfies tan θ 0 = v 0 y / v 0 x . Thus, 0 = tan –1 [(21.7 m/s)/(10.2 m/s) ]= 65°. 101. We adopt the positive direction choices used in the textbook so that equations such as Eq. 4-22 are directly applicable. The coordinate origin is at the initial position for the football as it begins projectile motion in the sense of §4-5), and we let
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 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

Ask a homework question - tutors are online