The displacement of particle is given by y=a +bt +ct^2-dt^4.initial ve...
Given information:
The displacement of a particle is given by the equation y = at + bt^2 + ct^2 - dt^4.
To find:
We need to determine the initial velocity and acceleration of the particle.
Solution:
Step 1: Differentiate the displacement equation to find velocity:
To find the velocity of the particle, we need to differentiate the displacement equation with respect to time (t).
Differentiating the equation y = at + bt^2 + ct^2 - dt^4 with respect to t, we get:
dy/dt = a + 2bt + 2ct - 4dt^3
This represents the velocity of the particle at any given time.
Step 2: Finding initial velocity:
The initial velocity of the particle is the velocity at time t = 0. Substituting t = 0 into the velocity equation, we get:
dy/dt = a + 2b(0) + 2c(0) - 4d(0)^3
dy/dt = a
Therefore, the initial velocity of the particle is a.
Step 3: Differentiate the displacement equation again to find acceleration:
To find the acceleration of the particle, we need to differentiate the displacement equation (y = at + bt^2 + ct^2 - dt^4) again with respect to time (t).
Differentiating the velocity equation (dy/dt = a + 2bt + 2ct - 4dt^3) with respect to t, we get:
d^2y/dt^2 = 2b + 2c - 12dt^2
This represents the acceleration of the particle at any given time.
Step 4: Finding initial acceleration:
The initial acceleration of the particle is the acceleration at time t = 0. Substituting t = 0 into the acceleration equation, we get:
d^2y/dt^2 = 2b + 2c - 12d(0)^2
d^2y/dt^2 = 2b + 2c
Therefore, the initial acceleration of the particle is 2b + 2c.
Final Answer:
The initial velocity of the particle is -b and the initial acceleration is 2c.