4. A projectile has an initial velocity of 20.0 m/s at an angle of 35.0° with respect to the x-direction. The object is initially 50.0 m above ground level. a) What is the maximum height of the object relative to the ground level? Vi= 20m is 30: 16.4mis 35° Vxi = 20 Cos (35) Vyi = 20 sin (35°) Vy=0 @ AYMAX Vyf? = Vyi"-2gay =11. Smis %3D %3D 50m 2. %3D hmax = 0=(11.5)²-29AY %3D = Aymax +h -13 2.25= - 29Ay %3D 6.75m + Som -132.25= AY 56.8 m 19.6 Ay = 6.75 m b) What total time is the object in the air for? Źğt²+ Vyit 2. Ay %3D - 56.8 = -gt 2. |1. 5t 11. 5t/s 9.9t+11.5t + 56.8=0 %3D A = -4.9 B = ||.5 C = 56.8 %3D %3D t= -|1.5t V(11.5)²_4(-4.9)(56.8) 21-4.9) t = - 11.5+ 13 2.25 + 1|1328 -11.5t -9.8 t = - 11. S t 35.292 4.773 t=7.478

4. A projectile has an initial velocity of 20.0 m/s at an angle of 35.0° with respect to the x-direction. The object is initially 50.0 m above ground level. a) What is the maximum height of the object relative to the ground level? Vi= 20m is 30: 16.4mis 35° Vxi = 20 Cos (35) Vyi = 20 sin (35°) Vy=0 @ AYMAX Vyf? = Vyi"-2gay =11. Smis %3D %3D 50m 2. %3D hmax = 0=(11.5)²-29AY %3D = Aymax +h -13 2.25= - 29Ay %3D 6.75m + Som -132.25= AY 56.8 m 19.6 Ay = 6.75 m b) What total time is the object in the air for? Źğt²+ Vyit 2. Ay %3D - 56.8 = -gt 2. |1. 5t 11. 5t/s 9.9t+11.5t + 56.8=0 %3D A = -4.9 B = ||.5 C = 56.8 %3D %3D t= -|1.5t V(11.5)²_4(-4.9)(56.8) 21-4.9) t = - 11.5+ 13 2.25 + 1|1328 -11.5t -9.8 t = - 11. S t 35.292 4.773 t=7.478

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter3: Motion In Two Dimensions

Section: Chapter Questions

Problem 39AP: A rocket is launched at an angle of 53.0 above the horizontal with an initial speed of 100. m/s. The...

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