t-level year 1 unit 2.4 mechanical advantage

What is the relationship between mass and weight according to Newton's second law?

• F = ma

• W = ma

• F = mg

• W = ma²

What does the symbol 'g' represent in the equation W = mg?

• Mass

• Force

• Gravity

• Weight

On Earth, what is the approximate value of acceleration due to gravity?

• 9.81 m/s²

• 10.5 m/s²

• 8.9 m/s²

• 9.5 m/s²

In the equation F = ma, what does 'a' stand for?

• Mass

• Acceleration

• Force

• Weight

What is the formula for calculating work when force and distance are known?

• work = force + distance

• work = force × distance

• work = force / distance

• work = force - distance

Which unit is used to measure mechanical work?

• Newton (N)

• Joule (J)

• Watt (W)

• Calorie

What is the formula for work when mass, gravity, and distance are considered?

• work = mass + gravity + distance

• work = mass × gravity × distance

• work = mass / gravity / distance

• work = mass - gravity - distance

Which of the following units is used to measure electrical energy?

• Calorie

• BTU

• Kilowatt hour (kWh)

• Newton-metre (Nm)

Answer explanation

The kilowatt hour (kWh) is the standard unit for measuring electrical energy, representing the amount of energy consumed when using one kilowatt of power for one hour. Other options measure different forms of energy.

What are the two main categories of energy?

• Thermal energy and chemical energy

• Kinetic energy and potential energy

• Electrical energy and nuclear energy

• Sound energy and light energy

What type of energy is described as the energy an object has due to its motion?

• Potential energy

• Thermal energy

• Kinetic energy

• Chemical energy