#vectors
- A particle is moving along a circular path with a constant speed 30 m/s. Correct Answer is option B) 30sqrt2 https://youtu.be/1hcDKwGYKlE 1
- Which of the following physical quantities is an axial vector? Correct option is d) Torque Concept :: Axial vectors are those vectors that represent rotational effect and act along the axis of rotation.... 1
- The position vector of a moving particle at time t is r=3i+4t^2j-t^3k .. Its displacement during the time interval t=1 s to t=3 s is Correct answer is 32j-26k Explaination:: r=3i+4t²j-t³k r_(t=1s)=3i+4j-k r_(t=3s)=3i+36j-27k Displacement = (r_(t=3s))-(r_(t=1s)) = 32j-26k 1
- If a unit vector is represented by 0.5i +0.8 j +ck then the value of 'c' is Correct option is b) √(0.11) Explaination:: The unit vector is given as A=0.5i +0.8 j +ck Magnitude of unit vector is always equal to 1 √((0... 1