If up is well defined - as in directly above, rather that somewhere up there, on the next storey up - it is a vector.
A scalar times a vector is a vector.
A scalar has distance but no direction. A vector has distance and direction. "12 feet up" has distance (12 feet) and direction (up), so is a vector.
Scalar
Time is scalar
No it is not a vector
A scalar times a vector is a vector.
vector
Yes, you can add a scalar to a vector by adding the scalar value to each component of the vector.
A scalar has distance but no direction. A vector has distance and direction. "12 feet up" has distance (12 feet) and direction (up), so is a vector.
Scalar
When multiplying a vector by a scalar, each component of the vector is multiplied by the scalar. This operation changes the magnitude of the vector but not its direction. Similarly, dividing a vector by a scalar involves dividing each component of the vector by the scalar.
An earthquake is neither a scalar nor a vector. It is an event.
vector
vector
Yes, you can multiply a vector by a scalar. The scalar will multiply each component of the vector by the same value, resulting in a new vector with each component scaled by that value.
It is scalar
scalar