General Physics (Phys1011) Quiz

The process of finding the size or amount of a physical quantity using a standard unit.

Quantities that cannot be expressed in terms of other physical quantities.

Quantities that can be expressed in terms of fundamental quantities.

The smallest unit of a physical quantity. For example, the meter (m) is the basic unit of length.

A way to represent the dimensions of a physical quantity using letters representing fundamental quantities.

The degree of precision in a measurement.

A system of expressing the reliability of a measurement by considering the number of significant digits.

The smallest unit of a physical quantity. For example, the meter (m) is the basic unit of length.

The difference between the observed value and the true value of a physical quantity.

Unpredictable variations in measurements caused by factors like equipment, environment, or observer estimation.

Consistent deviations in measurements caused by faulty equipment, incorrect calibration, or a flawed procedure.

The closeness of a measured value to the true value of a quantity.

The closeness of a set of measurements to each other.

The difference between a measurement and the true value expressed as a fraction of the true value.

The absolute value of the difference between a measurement and the true value.

A way to express a measurement, including the best estimate and the uncertainty.

A positive scalar value representing the length of a vector.

Two vectors are equal if they have the same magnitude and direction. Their position in space does not matter.

The continuous alteration of an object's position relative to a reference point.

A change in either the magnitude, direction, or both affects the vector.

Describes the motion of an object without considering the forces causing it. Uses quantities like velocity, acceleration, displacement, and time.

The total distance an object travels from its initial position to its final position. It's always a positive number.

Multiplying a vector by a scalar changes its magnitude, direction, or both, depending on the scalar value.

The shortest distance between an object's initial and final positions. It's a vector quantity, meaning it has both magnitude and direction.

The single vector resulting from adding two or more vectors.

A graphical method of adding vectors by placing the tail of one vector at the head of the other.

The ratio of the distance travelled by an object to the time taken. It tells us how fast an object is moving.

The total distance travelled divided by the total time taken. It's always a positive number.

A graphical method of adding vectors by forming a parallelogram with the vectors as adjacent sides. The diagonal of the parallelogram represents the resultant.

The rate of change of displacement over time. It tells us how fast an object is moving and in what direction.

Subtracting a vector is the same as adding its negative.

The total displacement divided by the total time taken. It's a vector quantity, meaning it has both magnitude and direction.

A vector that has a magnitude of one and is dimensionless. It is used to indicate direction.

A vector in the direction of another vector, but with a magnitude of one. It is obtained by dividing the vector by its magnitude.

A vector can be broken down into its components along the x, y, and z axes. These components are represented by the scalar multiples of the unit vectors î, ĵ, and k̂ respectively.

A system where a point in space is defined by its coordinates on three perpendicular axes: x, y and z. It's used to represent vectors as the sum of their components.

Adding vectors algebraically involves adding their corresponding components. The sum of two vectors is a new vector with components that are the sum of the original components.

Subtracting vectors is like adding the negative of the second vector to the first vector. The negative of a vector is the same vector but pointing in the opposite direction.

The components of the sum of two vectors are simply found by adding the corresponding components of the original vectors. For example, the x-component of the resultant vector is the sum of the x-components of the original vectors.

The change in the position of an object, represented by a vector pointing from its initial to its final position.

Velocity in the x-direction remains constant, meaning there is no acceleration in the x-direction.

The acceleration acting on an object due to gravity, which is always directed downwards.

The path traced by a projectile during its motion, which is always a parabolic shape.

The vector that specifies the location of an object in space, with components along the x and y axes.

The study of motion in two dimensions, considering both horizontal and vertical components.

A projectile motion's vertical component is a free-fall motion, meaning the object is only influenced by gravity.

A fundamental concept in physics that describes the rate of change of a projectile's velocity. It is zero in the x-direction for a projectile due to no force acting on the projectile horizontally.