Physics 163

Unit 3: Motion in Two-Dimensions

Problem Set D

Problem 1:

A projectile is launched from the ground with a velocity of 56.7 m/s, directed at a angle of 47.9 degrees with the horizontal. Resolve this velocity vector into horizontal and vertical components. Then determine the time (in seconds) that the projectile is in the air before landing.

• 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

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

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

Audio Help for Problem: 1 || 2 || 3 || 4 || 5 || 6 || 7 || 8 || 9 || 10 || 11

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