Math Problem Statement

How much time did it take to reach position 6? Use g = 10 m/s², and round your answer to the nearest hundredth. How far down range has the shell traveled at position 6? What is the altitude at position 6?

Solution

Given Data:

  • Initial velocity v=708m/sv = 708 \, \text{m/s}
  • Launch angle θ=36\theta = 36^\circ
  • Acceleration due to gravity g=10m/s2g = -10 \, \text{m/s}^2
  • Time at position 6: t6=52.00st_6 = 52.00 \, \text{s}
  • From the graph, the range xx increases horizontally, and altitude yy changes vertically.

Finding the answers:

  1. Downrange distance x6x_6:
    • The horizontal velocity component vxv_x is constant throughout the motion: vx=vcos(θ)v_x = v \cos(\theta) Substituting values: vx=708cos(36)v_x = 708 \cos(36^\circ) Using cos(36)0.809\cos(36^\circ) \approx 0.809: vx=708×0.809573m/sv_x = 708 \times 0.809 \approx 573 \, \text{m/s}

    • The horizontal distance xx traveled at time t6t_6 is: x6=vxt6x_6 = v_x \cdot t_6 Substituting vx=573m/sv_x = 573 \, \text{m/s} and t6=52.00st_6 = 52.00 \, \text{s}: x6=573×52.00=29,796mx_6 = 573 \times 52.00 = 29,796 \, \text{m} Rounded to the nearest whole number: x6=29,800mx_6 = 29,800 \, \text{m}


  1. Altitude y6y_6 at position 6:
    • The vertical position yy is determined using the kinematic equation: y=vyt+12gt2y = v_y \cdot t + \frac{1}{2} g t^2 where vy=vsin(θ)v_y = v \sin(\theta) is the initial vertical velocity.
      Substituting v=708m/sv = 708 \, \text{m/s} and sin(36)0.588\sin(36^\circ) \approx 0.588: vy=708sin(36)708×0.588416m/sv_y = 708 \sin(36^\circ) \approx 708 \times 0.588 \approx 416 \, \text{m/s}

    • Now substituting into the vertical position formula: y6=vyt6+12gt62y_6 = v_y t_6 + \frac{1}{2} g t_6^2 Substituting values vy=416m/sv_y = 416 \, \text{m/s}, g=10m/s2g = -10 \, \text{m/s}^2, and t6=52.00st_6 = 52.00 \, \text{s}: y6=416(52.00)+12(10)(52.00)2y_6 = 416 (52.00) + \frac{1}{2} (-10) (52.00)^2

      First, calculate each term

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Math Problem Analysis

Mathematical Concepts

Projectile Motion
Kinematics
Trigonometry

Formulas

Horizontal velocity: v_x = v * cos(θ)
Horizontal distance: x = v_x * t
Vertical velocity: v_y = v * sin(θ)
Vertical position: y = v_y * t + (1/2) * g * t^2

Theorems

Equations of motion for constant acceleration

Suitable Grade Level

Grade 11-12