If \(\vec F\left( t \right)\) vector has characteristics similar to a straight line, then which option is true
1
\(\rm \vec F \times \frac{{d\vec F}}{{dt}} = 0\)
2
\(\rm \vec F.\frac{{d\vec F}}{{dt}} = 0\)
3
Both a and b
4
None of these
If \(\vec F\left( t \right)\) vector has characteristics similar to a straight line, then which option is true
\(\rm \vec F \times \frac{{d\vec F}}{{dt}} = 0\)
\(\rm \vec F.\frac{{d\vec F}}{{dt}} = 0\)
Both a and b
None of these