Unit 3: Motion in Two-Dimensions
Problem Set D
A tennis player stretches out to reach a ball that is just barely above the ground and successfully 'lobs' it over her opponent's head. The ball is hit with a speed of 21.9 m/s at an angle of 69.2 degrees. Determine the time (in seconds) that the ball is in the air.
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.
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