Math Problem Statement

the velocity of a moving particle along a straight line is given by v=1 over 288 t[576-t squared] find the distance travelled in the 24 seconds

Solution

To find the distance traveled by the particle over the 24-second interval, we can use the velocity function v(t)v(t) and integrate it with respect to time to get the displacement.

The velocity function is given as:

v(t)=1288t(576t2)v(t) = \frac{1}{288} t (576 - t^2)

To find the distance traveled from t=0t = 0 to t=24t = 24, we integrate v(t)v(t) over this interval:

s=024v(t)dt=0241288t(576t2)dts = \int_{0}^{24} v(t) \, dt = \int_{0}^{24} \frac{1}{288} t (576 - t^2) \, dt

Let's compute the integral step by step.

1. Expand the expression inside the integral:

v(t)=1288t(576t2)=1288(576tt3)v(t) = \frac{1}{288} t (576 - t^2) = \frac{1}{288} (576t - t^3)

Now the integral becomes:

s=1288024(576tt3)dts = \frac{1}{288} \int_{0}^{24} (576t - t^3) \, dt

2. Split the integral:

s=1288[024576tdt024t3dt]s = \frac{1}{288} \left[ \int_{0}^{24} 576t \, dt - \int_{0}^{24} t^3 \, dt \right]

3. Integrate each term:

  • The integral of 576t576t is:

576tdt=288t2\int 576t \, dt = 288t^2

Evaluating this from 0 to 24 gives:

288(242)288(02)=288(576)=165888288(24^2) - 288(0^2) = 288(576) = 165888

  • The integral of t3t^3 is:

t3dt=t44\int t^3 \, dt = \frac{t^4}{4}

Evaluating this from 0 to 24 gives:

2444044=3317764=82944\frac{24^4}{4} - \frac{0^4}{4} = \frac{331776}{4} = 82944

4. Combine the results:

Now, subtract the integrals and multiply by 1288\frac{1}{288}:

s=1288(16588882944)=1288(82944)=288s = \frac{1}{288} \left( 165888 - 82944 \right) = \frac{1}{288} (82944) = 288

Thus, the distance traveled by the particle in 24 seconds is 288 units.


Would you like any further clarifications or additional details? Here are five related questions:

  1. What is the difference between displacement and distance traveled?
  2. How does integrating velocity give the displacement?
  3. How would the result change if the velocity function had a different form?
  4. Can this technique be applied to a velocity function with trigonometric terms?
  5. How do we interpret negative velocity in terms of displacement?

Tip: When velocity changes direction, be mindful of whether you're asked for total distance (which is always positive) or displacement (which can be negative).

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Math Problem Analysis

Mathematical Concepts

Calculus
Integration
Kinematics

Formulas

s = ∫ v(t) dt
v(t) = (1/288) * t * (576 - t^2)
Definite Integral

Theorems

Fundamental Theorem of Calculus

Suitable Grade Level

Grades 11-12 / College Level