Units (Astrophysics)
3 marks · Normal(a)[2 marks]
State the SI unit for (i) force, and (ii) time.
(b)[1 mark]
Give the SI unit for acceleration.
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) (i) newton (N); (ii) second (s)
(b) metre per second squared (m/s^2)
Common mistakes: Giving wrong symbols or non-SI units
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Force: newton (N) stated.
B2 (a) · 1 mark · Time: second (s) stated.
B1 (b) · 1 mark · Acceleration: m/s² or metre/second² stated.
Worked solution
a. (i) Force: newton (N) (ii) Time: second (s) b. Acceleration: metre per second squared (m/s²)