ojectin Motion Problem 3.59 Problem 3.59 Correct Aprojectile is shot from the ed

Question

ojectin Motion Problem 3.59 Problem 3.59 Correct Aprojectile is shot from the edge of aci 115 m above gound level with an initial speed of vo 72m/s at an angle of 350' with the horizontal, as shown in the fiqure (Figure.1 Significant Figures Feedback: You answer 85.988 was eher nuded erreyred.dkntite dig his part Part E At the instant just before the projectile hits point P. find the angle made by the veleoity vecor with the horizontal Express your answer to three significant figurat and include the appropriate units - 1-47.7 | Units below the horicon Incorrect; Try Again; 4 attempts remaining: no points deducted Enter your answer using dimensions of plane angle of 1 Figure 1 Part F Find the maximum height above the cliltf top reached by the projectle Express your answer to three significant figures and Include the appropriate units My Answers Give Up Correct

Explanation / Answer

Part E:

velocity of projection=72m/s

angle of projection=35o

horizontal component of velocity = 72*cos35=58.98m/s(towards right)

Maximum height reached by projectile (measured above cliff)=(72*sin35)2/(2*9.8) = 87.01m

Maximum height reached by projectile measured from ground = 115+87.01=202.01m

vertical velocity of projectile when it falls by 202.01m = sqrt(2*9.8*202.01) = 62.92m/s(downwards)

Angle made by velocity vector just before point P = tan-1(62.92/58.98) = 46.85o below the horizon

Part F :

As calculated in part E, maximum height reached above cliff = 87.01m

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