a ba https://session.masteringp PHYS 233-10 Intro Physics I Calculus Discussion

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a ba https://session.masteringp PHYS 233-10 Intro Physics I Calculus Discussion 2015 Fal Class 4-1 Homewors PSS 3.1 Projectile motion problems myct/itemView?assignmentProblemID-544824528offset-next Resources previous PSS 3.1 Projectile motion problems Now you can use the information you have gathered and the kinematics equations for projectile motion to reach a solution Learning Goal: Part D To practice Problem-Solving Strategy 3 1 Projectile motion problems Aball thrown horzontally at v.-26 0 m/stravels ahonzontal dstaceofd=570mbefore hat ng the ground From what height h was the ball thrown? A ball thrown horizontally with speed tn " 26 m/s travels a horizontal distance of d = 57 0 m before hitting the ground From what height h was the ball thrown? Express your answer numerically in meters. Submit ints My Answers Give Up Review Part Part E Ths question will be shown after you complete previous questions

Explanation / Answer

Initial horizontal velocity is,

vi = 26 m/s

The horizontal distance is,

x = 57 m

The time taken to reach ground, is,

t = ( 2h / g )

Rewrite the equation for h.

h = (1/2) g t^2

But, t = x / vi

         = 57 / 26

         = 2.19 s

Hence,

            h = (1/2) * 9.8 * (2.19)^2

             = 23.55 m

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