Physics 163

Unit 3: Motion in Two-Dimensions

Problem Set C

Problem 4:

Tom the cat is chasing Jerry the mouse across a table surface 1.11 m high. Jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 4.23 m/s. How many meters from the bottom edge of the table will Tom strike the floor?

• Read the problem carefully and diagram the physical situation (trajectory diagram)
• Identify known and unknown information in an organized manner (x-y table)
• Take the time to plot out a strategy prior to beginning the solution
• Identify an appropriate formula to use
• Perform step-by-step algebraic manipulations

 Diagram Horizontal Vertical x = ??? vix = vfx = _______ ax = 0 m/s t = ??? y = _______ viy = 0 m/s ay = -9.8 m/s/s vfy = ??? t = ???

A discussion of the formulae for projectile motion and of the basic strategy for solving such problems is provided on the Set C Overview Page.

Detailed information about and discussion of the strategies for solving horizontally launched projectile problems is provided online at The Physics Classroom.

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