Physics Units and Formulas

The video tutorial explains how to calculate the speed of an object using distance and time, measured in meters and seconds. It introduces the concept of force as mass times acceleration, leading to the derived unit of Newton. The tutorial also covers kinetic energy, calculated as half the mass times velocity squared, and measured in joules. Finally, it discusses the seven base units, such as kilogram and Kelvin, and how they combine to form derived units like the Newton and joule.

What two pieces of information are needed to calculate the speed of an object?

• Distance and mass

• Time and velocity

• Distance and time

• Mass and acceleration

In which unit is velocity traditionally expressed at GCSE level?

• Meters per second

• Kilometers per hour

• Miles per hour

• Feet per second

What is the formula for calculating force?

• Force = mass x acceleration

• Force = mass / acceleration

• Force = velocity x time

• Force = distance / time

What is the derived unit for force?

• Newton

• Watt

• Pascal

• Joule

How is kinetic energy calculated?

• 1/2 x mass x velocity squared

• Mass x velocity

• Distance x time

• Mass x acceleration

What is the unit of kinetic energy?

• Newton

• Watt

• Joule

• Pascal

How many base units are there in physics?

• Six

• Eight

• Five

• Seven

Which of the following is not a base unit?

• Volt

• Kilogram

• Mole

• Kelvin

What is the base unit for temperature?

• Celsius

• Rankine

• Fahrenheit

• Kelvin

Which unit is derived from base units to measure electrical resistance?

• Watt

• Newton

• Joule

• Ohm