NEET-XI-Physics
04: Motion in a plane
- #4-aadding any two scalars, (b) adding a scalar to a vector of the same dimensions, (c) multiplying any vector by any scalar, (d) multiplying any two scalars, (e) adding any two vectors, (f) adding a component of a vector to the same vector.
Ans : No, because only the scalars of same dimensions can be added.
(b) No, because a scalar cannot be added to a vector.
(c) Yes, multiplying a vector with a scalar gives the scalar (number) times the vector quantity which makes sense and one gets a bigger vector. For example, when acceleration A is multiplied by mass m, we get a force F = ml
(d) Yes, two scalars multiplied yield a meaningful result, for example multiplication of rise in temperature of water and its mass gives the amount of heat absorbed by that mass of water.
(e) No, because the two vectors of same dimensions can be added.
(f) Yes, because both are vectors of the same dimensions.
- #4-badding a scalar to a vector of the same dimensions,Ans : No, because a scalar cannot be added to a vector.
- #4-cmultiplying any vector by any scalar,Ans : Yes, multiplying a vector with a scalar gives the scalar (number) times the vector quantity which makes sense and one gets a bigger vector. For example, when acceleration A is multiplied by mass m, we get a force F = ml
- #4-dmultiplying any two scalars,Ans : Yes, two scalars multiplied yield a meaningful result, for example multiplication of rise in temperature of water and its mass gives the amount of heat absorbed by that mass of water.
- #4-eadding any two vectors,Ans : No, because the two vectors of same dimensions can be added.
- #4-fadding a component of a vector to the same vector.
Ans : Yes, because both are vectors of the same dimensions.