Question
Question: The displacement of the particle is given by \(y = a + bt + ct^{2} - dt^{4}.\) The initial velocity...
The displacement of the particle is given by
y=a+bt+ct2−dt4. The initial velocity and acceleration are respectively
A
b,−4d
B
−b,2c
C
b,2c
D
2c,−4d
Answer
b,2c
Explanation
Solution
Given y=a+bt+ct2−dt4
∴ v = dtdy=0+b+2ct−4dt3
Putting t=0, vinitial = b
So initial velocity = b
Now, acceleration (1) =dtdv=0+2c−12dt2
Putting t = 0, ainitial = 2c