Physics Unit and Measurements Quiz

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Questions and Answers

What is the formula for calculating pressure?

Pressure = Mass * Acceleration

Pressure = Force / Area (correct)

Pressure = Momentum / Velocity

Pressure = Force * Area

Momentum is defined as mass multiplied by acceleration.

False

What unit is pressure measured in?

Pascal

The formula for momentum is _______.

mass * velocity Signup and view all the answers

Match the following physical quantities with their corresponding equations:

Pressure = Force / Area Momentum = Mass * Velocity Force = Mass * Acceleration Acceleration = Change in Velocity / Time Signup and view all the answers

What is the formula for calculating density?

Mass/Volume Signup and view all the answers

Speed is expressed in meters per second (m/s).

True Signup and view all the answers

What is the unit of acceleration?

m/s² Signup and view all the answers

Velocity is calculated by dividing displacement by ______.

time Signup and view all the answers

Match the following physical quantities with their correct formulas:

Density = Mass/Volume Speed = Distance/Time Velocity = Displacement/Time Acceleration = Change in velocity/Time Signup and view all the answers

Which of the following units is used to measure speed?

m/s Signup and view all the answers

Acceleration is the rate of change of speed only.

False Signup and view all the answers

What is the abbreviation for the formula of density?

kg/m³ Signup and view all the answers

What is the unit of work or energy in the International System of Units (SI)?

Joule Signup and view all the answers

A derived quantity can be expressed in terms of two or more basic quantities.

True Signup and view all the answers

What is the formula for power in terms of work and time?

Power = Work / Time Signup and view all the answers

The unit of power is the ______.

Watt Signup and view all the answers

Match the following physical quantities with their types:

Length = Basic Quantity Velocity = Derived Quantity Temperature = Scalar Quantity Work = Scalar Quantity Signup and view all the answers

Which of the following is NOT considered a basic quantity?

Force Signup and view all the answers

Speed is classified as a scalar quantity.

True Signup and view all the answers

Name a derived quantity related to energy.

Work Signup and view all the answers

Study Notes

Unit and Measurements

Density: Mass divided by Volume. Measured in kg/m³.
Speed: Distance traveled per unit time. Measured in m/s.
Velocity: Displacement per unit time. Measured in m/s.
Acceleration: Change in velocity per unit time. Measured in m/s².
Force: Mass multiplied by acceleration. Measured in Newtons (N).
Pressure: Force per unit area. Measured in Pascals (Pa).
Momentum: Mass multiplied by velocity. Measured in kg⋅m/s.
Work/Energy: Force multiplied by distance. Measured in Joules (J).
Power: Work done per unit time. Measured in Watts (W).

Types of Physical Quantities

Basic Quantities: Fundamental quantities, such as length, mass, time, electric current, and temperature.
Derived Quantities: Quantities that can be derived from basic quantities, including area, volume, density, speed, velocity, and acceleration.

SI Units

Length: Meter (m)
Mass: Kilogram (kg)
Time: Second (s)
Electric Current: Ampere (A)
Temperature: Kelvin (K)
Matter of mass: Mole (mol)
Luminous intensity: Candela (cd)

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Description

Test your knowledge on unit definitions and measurements in physics. This quiz covers essential concepts including density, speed, velocity, and more, along with their SI units. Perfect for students looking to reinforce their understanding of physical quantities.