Scalars and Vectors

Quantities that have size and direction are called __________.

Another word for "size" is...

• magnification

• magnetism

• magnitude

• magnanimity

Quantities with a size but no direction are called __________.

Select the scalar quantities.

• velocity

• distance

• energy

• acceleration

• speed

A person walks 5 m north and then 5 m south. Calculate the distance they travel.

A person walks 5 m north and then 5 m south. Calculate their displacement.

Two cars are travelling at 10 m/s, in different directions. Select the sentences that are true.

• Their speeds are the same.

• Their speeds are different.

• Their velocities are the same.

• Their velocities are different.

Select the vector quantities.

• temperature

• velocity

• momentum

• acceleration

• pressure

Explain why weight is a vector quantity.

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Explain why a car moving in a circle at a constant speed has a changing velocity.

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