Physics 163

Unit 3: Motion in Two-Dimensions

Problem Set C

Problem 11:

A Hot Wheels car rolls off a table at a speed of 2.36 m/s and hits the floor a distance of 87.4 cm from the table's edge. Determine the height (in cm) of the table. (Take notice of the units being used)

• 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 = ______ t = ______ y = ______ viy = ______ ay = ______ 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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