A particle is moving with the given data. Find the position of the particle.a(t) = t2 − 9t + 5, s(0) = 0, s(1) = 20s(t) =
Question
A particle is moving with the given data. Find the position of the particle.
a(t) = t² − 9t + 5,
s(0) = 0,
s(1) = 20
s(t) =
Solution
The problem involves a particle moving along a line with a given acceleration function a(t) = t^2 - 9t + 5. We are also given two initial conditions: the position of the particle at time t=0 is s(0) = 0, and at time t=1 is s(1) = 20.
The position function s(t) can be found by integrating the acceleration function twice.
Step 1: Find the velocity function, v(t), by integrating the acceleration function, a(t):
∫a(t) dt = ∫(t^2 - 9t + 5) dt = (1/3)t^3 - (9/2)t^2 + 5t + C1
This is the velocity function v(t), where C1 is the constant of integration.
Step 2: Use the initial condition s(0) = 0 to find the constant C1.
When t=0, the velocity v(0) is also 0 (since the particle starts from rest). So, we set the velocity function equal to zero and solve for C1:
0 = (1/3)(0)^3 - (9/2)(0)^2 + 5*(0) + C1 => C1 = 0
So, the velocity function is v(t) = (1/3)t^3 - (9/2)t^2 + 5t.
Step 3: Find the position function, s(t), by integrating the velocity function, v(t):
∫v(t) dt = ∫[(1/3)t^3 - (9/2)t^2 + 5t] dt = (1/12)t^4 - (3/2)t^3 + (5/2)t^2 + C2
This is the position function s(t), where C2 is the constant of integration.
Step 4: Use the initial condition s(1) = 20 to find the constant C2.
We set the position function equal to 20 and solve for C2:
20 = (1/12)(1)^4 - (3/2)(1)^3 + (5/2)(1)^2 + C2 => C2 = 20 - (1/12) + 3/2 - 5/2 => C2 = 20 - 1/12 + 2 => C2 = 22 - 1/12 => C2 = 263/12
So, the position function is s(t) = (1/12)t^4 - (3/2)t^3 + (5/2)t^2 + 263/12.
Similar Questions
A particle is moving with the given data. Find the position of the particle.a(t) = t2 − 7t + 6, s(0) = 0, s(1) = 20s(t) =
The position of a particle related to time is given by x = ( 5 t 2 − 4 t + 5 ) m . The magnitude of velocity of the particle at t = 2 s will be :
The position of a particle moving along the x-axis is given by x = a (t – 1) + b(t – 1) where a and b are constant, then :
A PARTICLE IS MOVING ALONG A STRAIGHT LINE. ITS POSITION X AT TIME T IS GIVEN BY X=2T^3-3T^+2 FIND THE DISTANCE TRAVELLED BY THE PARTICLE IN THE FIRST 5 SECONDS
The coordinates of a moving particle at time t are given by x=ct2 and y=bt2. The speed of the particle is given by
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.