Projectile Motion. Projectile- only force on object is gravity Trajectory- projectile’s path Independence of Motion – Velocity and acceleration are vectors.

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Projectile Motion

Projectile- only force on object is gravity Trajectory- projectile’s path Independence of Motion – Velocity and acceleration are vectors – Combination of x and y motion

Solving Projectile Motion Problems Break problem into 2 problems. X and Y. Vertical motion has acceleration of gravity ALWAYS. (Acceleration = -9.8 m/s²) Air drag is neglected, so X has no acceleration. This means that velocity in X direction DOES NOT change. Vertical and horizontal motion is connected through time. The time is the SAME in both X and Y.

Equations v avg =d/t Vf 2 = Vi 2 + 2ad a= (Vf-Vi) / t d = ½ at² + Vit

A baseball is dropped from the upper deck, which is 50 m up. How long does it take to hit the ground? How far from the upper deck will it land?

A baseball is thrown horizontally at 15 m/s from the upper deck, which is 50 m up. How long does it take to hit the ground? How far from the upper deck will it land?

A car drives off a cliff that is 3,550 ft high. The car lands 20 seconds later, 0.5 miles from the cliff. How fast was the car going in mph?