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Variation of displacement x is described...

Variation of displacement x is described by equation `x = 3 - 4 - 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)/(d t) = 4 - 10t - 18 t^(2)`
At `t = 0, (d x)/(d t) = -4`
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