Math Problem Statement

If a bullet leaves the muzzle of a rifle at 600.0 m/s, and the barrel is 0.90 m long, what was the acceleration of the bullet while in the barrel

Solution

To find the acceleration of the bullet while in the barrel, we can use the kinematic equation:

v2=u2+2asv^2 = u^2 + 2as

Given:

  • Final velocity (vv) = 600.0m/s600.0 \, \text{m/s}
  • Initial velocity (uu) = 0m/s0 \, \text{m/s} (assuming the bullet starts from rest)
  • Distance traveled (ss) = 0.90m0.90 \, \text{m}
  • Acceleration (aa) = ?

Rearrange the equation to solve for aa:

a=v2u22sa = \frac{v^2 - u^2}{2s}

Substitute the values: a=600.02022×0.90a = \frac{600.0^2 - 0^2}{2 \times 0.90}

a=3600001.8a = \frac{360000}{1.8}

a=200000m/s2a = 200000 \, \text{m/s}^2

Answer:

The acceleration of the bullet while in the barrel is 200,000m/s2200,000 \, \text{m/s}^2.


Would you like a detailed step-by-step breakdown of how the equation works, or do you have any further questions?


Related Questions:

  1. How would the acceleration change if the barrel length was doubled?
  2. What other forces might influence the bullet's motion in the barrel?
  3. How does the bullet's acceleration compare to that of a car's in a drag race?
  4. How does the muzzle velocity affect the bullet's kinetic energy?
  5. What would happen if there were air resistance in the barrel?

Tip:

Always double-check units in kinematics problems to ensure consistency, especially when working with distances, speeds, and accelerations.

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Math Problem Analysis

Mathematical Concepts

Kinematics
Acceleration
Motion under constant acceleration

Formulas

v^2 = u^2 + 2as
a = (v^2 - u^2) / (2s)

Theorems

Kinematic equations for motion with constant acceleration

Suitable Grade Level

Grades 9-12