When the object is moving in uniform circular motion, then the angle between the velocity vector andacceleration vector is equal to 90 degrees. In this case, the type of acceleration caused is generally called as centripetal acceleration. Thus acceleration vector forms 90 degree angle with the velocity vector.
State for each of the following physical quantities, if it is a scalar or a vector: volume, mass, speed, acceleration, density, number of moles, velocity, angular frequency, and angular velocity.
Volume - scalar quantitySpeed - scalar quantityAcceleration - vector quantityDensity - scalar quantityNumber of moles - scalar quantityVelocity - vector quantityAngular frequency - scalar quantity Angular velocity - vector quantity Answer VerifiedHint: In physics, a vector is a quantity with both magnitude and direction. It's usually represented by an arrow with the same direction as the amount and a length proportionate to the magnitude of the quantity. A vector does not have location, even though it has magnitude and direction. A vector is not affected if it is shifted parallel to itself as long as its length is not modified. Complete answer: Note: Angular velocity may be divided into two categories. The pace at which a point object circles around a given origin, or the temporal rate at which its angular location changes relative to the origin, is referred to as orbital angular velocity. In contrast to orbital angular velocity, spin angular velocity relates to how quickly a rigid body rotates with regard to its centre of rotation and is independent of the choice of origin. |