ch04-p020

# ch04-p020 - 20. The acceleration is constant so that use of...

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20. The acceleration is constant so that use of Table 2-1 (for both the x and y motions) is permitted. Where units are not shown, SI units are to be understood. Collision between particles A and B requires two things. First, the y motion of B must satisfy (using Eq. 2-15 and noting that θ is measured from the y axis) 22 2 11 30 m (0.40 m/s ) cos . y ya t t ªº = ¡ = ¬¼ Second, the x motions of A and B must coincide: 2 (3.0 m/s) (0.40 m/s ) sin . x vt a t t t = ¡ = We eliminate a factor of t in the last relationship and formally solve for time: 2 ( 3 . 0 m / s ) . (0.40 m/s ) sin x v t a == This is then plugged into the previous equation to produce
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## 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.

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