Topic 2 Motion and Forces

Question 1

Explain that a scalar quantity has magnitude (size) but no specific direction

Answer 1

Scalar quantities have a size or magnitude only and need no other information to specify them. Thus, 10 cm, 50 sec, 7 litres and 3 kg are all examples of scalar quantities.

Question 2

Explain the difference between vector and scalar quantities

Answer 2

Scalars are quantities that only have magnitude (or size), while vectors have both magnitude and direction.

Question 3

Describe how weight is measured