Forces 5a Scalars and Vectors

What is a physical quantity?

• Something that can be measured

• The size of a numerical value

• A measurement with no units

What does 'magnitude' mean?

• A measurement with no units

• Something that can be measured

• The size of a numerical value

What is a scalar quantity?

• A physical quantity that has magnitude and an associated direction

• A physical quantity that has an associated direction only

• A physical quantity that has magnitude only

What is a vector quantity?

• A physical quantity that has magnitude only

• A physical quantity that has magnitude and an associated direction

• A physical quantity that has an associated direction only

Which of these is a scalar quantity?

• Acceleration

• Velocity

• Speed

Which of these is a scalar quantity?

• Force

• Energy

• Velocity

Which of these is a vector quantity?

• Displacement

• Distance travelled

• Speed

Which of these is a vector quantity?

• Temperature

• Thermal energy

• Momentum

Which of these is NOT a vector?

• 200 metres west

• 20 kilometres

• 2 metres upwards

How are vectors added using a scale diagram?

• Drawn tip-to-tail

• Drawn tip-to-tip

• Drawn tail-to-tail