The position vector of a particle is given by `vecr=vecr_(0)` (1-at)t, where t is the time and a as well as `vecr_(0)` are constant. After what time t

Question

The position vector of a particle is given by `vecr=vecr_(0)` (1-at)t, where t is the time and a as well as `vecr_(0)` are constant. After what time t

The position vector of a particle is given by `vecr=vecr_(0)` (1-at)t, where t is the time and a as well as `vecr_(0)` are constant. After what time the particle retursn to the starting point?
A. a
B. `(1)/(a)`
C. `a^(2)`
D. `(1)/(a^(2))`

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
Returning at starting point means `vecr=vec0`
`rArr r_(0)(1-at)t=0`
`rArr (1-at)t=0`
`rArr t=0, t=(1)/(a)`

5 views Answered 2023-02-05 15:29