The vector projection of a vector on y-axis is

Position of a particle in a rectangular-co-ordinate system is (3, 2, 5). Then its position vector will be

If a particle moves from point P (2,3,5) to point Q (3,4,5). Its displacement vector be

A force of 5 N acts on a particle along a direction making an angle of 60° with vertical. Its vertical component be

If A=3î+4ĵ and B=7î+24ĵ, the vector having the same magnitude as B and parallel to A is

The vector that must be added to the vector î-3ĵ+2k̂ and 3î+6ĵ-7k̂ so that the resultant vector is a unit vector along the y-axis is

How many minimum number of coplanar vectors having different magnitudes can be added to give zero resultant

A hall has the dimensions 10m×12m×14m. A fly starting at one corner ends up at a diametrically opposite corner. What is the magnitude of its displacement

100 coplanar forces each equal to 10 N act on a body. Each force makes angle π/50 with the preceding force. What is the resultant of the forces

The magnitude of a given vector with end points (4, – 4, 0) and (– 2, – 2, 0) must be

A vector is represented by 3î+ĵ+2k̂. Its length in XY plane is

Five equal forces of 10 N each are applied at one point and all are lying in one plane. If the angles between them are equal, the resultant force will be

Any vector in an arbitrary direction can always be replaced by two (or three)

Angular momentum is

Which of the following is a vector

Which of the following is a scalar quantity

A boy walks uniformally along the sides of a rectangular park of size 400 m× 300 m, starting from one corner to the other corner diagonally opposite. Which of the following statement is incorrect

Surface area is

There are two force vectors, one of 5 N and other of 12 N at what angle the two vectors be added to get resultant vector of 17 N, 7 N and 13 N respectively

A truck travelling due north at 20 m/s turns west and travels at the same speed. The change in its velocity be

If the sum of two unit vectors is a unit vector, then magnitude of difference is