Understanding SI Units and Derived Units

This video introduces SI base and derived units, explaining the seven base units: meter, kilogram, second, Kelvin, Ampere, mole, and Candela. It demonstrates how to derive units for speed, force, and energy, using equations and base units. The video also covers unit conventions, emphasizing the importance of lowercase letters for unit names and capital letters for symbols named after people.

Which of the following is NOT an SI base unit?

• Meter

• Kilogram

• Second

• Liter

What is the derived unit for speed?

• Meter per kilogram

• Second per meter

• Kilogram per second

• Meter per second

How is the unit for force derived?

• By multiplying mass and acceleration

• By multiplying mass and velocity

• By dividing acceleration by mass

• By dividing mass by acceleration

What is the derived unit for force called?

• Watt

• Pascal

• Newton

• Joule

Which equation is used to derive the unit for energy?

• Force equals mass times acceleration

• Work done equals force times distance

• Acceleration equals change in velocity divided by time

• Speed equals distance divided by time

What is the unit for energy expressed in base units?

• Meter per second squared

• Kilogram per meter second squared

• Kilogram meter squared per second squared

• Kilogram meter per second squared

Which of the following units is named after a person and has a capital letter in its symbol?

• Meter

• Kilogram

• Second

• Newton

Why does the Kelvin have an uppercase 'K' in its symbol?

• It is a unit of mass

• It is a base unit

• It is named after a person

• It is a derived unit

Which of the following is a correct convention for writing unit names?

• Use lowercase letters for unit names

• Always use capital letters

• Use capital letters for base units

• Use uppercase letters for all units

What is the only SI base unit that has a prefix?

• Kilogram

• Ampere

• Meter

• Second