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Solving Projectile Motion Problems: Formulas and Hints

Learn how to solve projectile motion problems step by step using essential formulas and helpful hints for both 1D and 2D scenarios. Master finding time, distance, and velocities accurately.

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Solving Projectile Motion Problems: Formulas and Hints

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  1. Projectile problem 1 • A projectile is fired straight off of a 100 m high cliff at 50 m/s. Find • the time it takes to hit the ground • b) the horizontal distance it will travel • c) The velocity when it hits the ground. • Use d y = viyt + ½ ayt2 • Use Vx = dx/t • Use for Vyfinal : Vf = Vi + at • Then add head to tail with Puthagorean theorom to find the total V final

  2. Projectile problem 2 • A ball is hit at a 36º angle upward and leaves the bat at 25 m/s. Find • the initial horizontal speed b) the initial vertical speed c) the time it takes to hit the ground • the height it will travel e) the horizontal distance it will travel • Use Vx = 25 Cos36 b) Use Vy = 25 sin 36 • c) Use Vfy = 0 = Viy +at d) Use dy = 0 + ½ at2 • e) Use dx = (Vx )t

  3. Hints for 2D projectile problems • Separate given data into x and y. • Finding time in the air is a good first step. Find an equation with t and the things you are given. • ay is always 9.8 m/s2. • Sometimes Vx =0 or Vy = 0. • Vy always equals zero at the top of a parabola.

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