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Variation of displacement : is described...

Variation of displacement : is described by equation `x= 3-4t-5t^(2)- 6t^(3)` in terms of time t. The initial velocity along the axis is denoted by

A

3 units

B

- 4 units

C

- 5 units

D

- 6 units

Text Solution

Verified by Experts

The correct Answer is:
B
`x=3-4t -5t^(2)-6t^(3)`
`(dx)/(dt) =-4-10t-18 t^(2)`
At `t=0, (dx)/(dt) =-4`
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