Units (Forces and Motion)
2 marks · NormalA block is being pushed across a table with a force of 4 newtons. Its mass is 2 kg. Answer the following questions:
(a)[1 mark]
Write down the SI unit for mass.
(b)[1 mark]
Write down the SI unit for force.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) kilogram (kg)
(b) newton (N)
Common mistakes: Wrong units for mass (e.g. grams for SI); Wrong units for force (e.g. kg m/s)
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Gives kilogram (kg) as the SI unit for mass.
B1 (b) · 1 mark · Gives newton (N) as the SI unit for force.
Worked solution
a) The SI unit for mass is kilogram (kg). b) The SI unit for force is newton (N).