Let and be two non-collinear unit vectors. If u = a -( a b ) b ext and v = a imes b …
Physics · JEE Advanced · NTA Exams — Kinematics
Let
and
be two non-collinear unit vectors. If
\(\vec{u}=\vec{a}-(\vec{a} \cdot \vec{b}) \vec{b} \ ext { and } \vec{v}=\vec{a} \ imes \vec{b}\), then |
| is
\(\vec{u}=\vec{a}-(\vec{a} \cdot \vec{b}) \vec{b} \ ext { and } \vec{v}=\vec{a} \ imes \vec{b}\), then |
- |
| - |
| + |
·
| - |
| + |
·
| - |
| +
⋅
Answer
(A) | |
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- A cricketer hits a ball with a velocity 25 m/s at 60o above the horizontal. How far (approximately) above the…
- Assertion: In a plane to plane projectile motion, the angle between instantaneous velocity vector and…
- From certain height, two bodies are projected horizontally with velocities 10 m/s and 20 m/s. They hit the…
- A small block is shot into each of the four tracks as shown below. Each of the tracks rises to the same…
- A particle is dropped under gravity from rest from a height h(g = 9.8 m/sec 2 ) and it travels a distance…
- A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of…
- ext Let a = i + j + k , b = i - j + k ext and c = i - j - k be three vectors. A vector in the plane of a ext…
- If a =( i + j + k ), a b =1 and a b = j - k , then b is