If the sum of two unit vectors is also a unit vector. then magnitude of their difference and angle between the two given unit vectors is ..............
$\sqrt{3}, 60^{\circ}$
$\sqrt{3}, 120^{\circ}$
$\sqrt{2}, 60^{\circ}$
$\sqrt{2}, 120^{\circ}$
Add vectors $\overrightarrow{ A }, \overrightarrow{ B }$ and $\overrightarrow{ C }$ each having magnitude of $50$ unit and inclined to the $X$-axis at angles $45^{\circ}, 135^{\circ}$ and $315^{\circ}$ respectively.
How many minimum number of coplanar vectors having different magnitudes can be added to give zero resultant
A person moved from $A$ to $B$ on a circular path as shown in figure. If the distance travelled by him is $60 \,m$, then the magnitude of displacement would be$.....\,m$ (Given $\left.\cos 135^{\circ}=-0.7\right)$
Which of the following is independent of the choice of co-ordinate system