Why is magnitude alone insufficient to specify a force?
A
A larger mass has greater inertia.
B
Force is a vector, so its direction is also required.
C
Its acceleration is zero, so its velocity remains constant.
D
The weight of a mass mmm is given by W=mgW=mgW=mg, where near Earth's surface g=9.8 m s−2\boxed{g=9.8\text{ m s}^{-2}}g=9.8 m s−2 unless stated otherwise.
2.8.1 Forces and Newton's laws Flashcards
Flashcards for WJEC A Level Maths 2.8.1 Forces and Newton's laws, covering the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4. 20 cards, matched to the WJEC A Level Maths (1300QS) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.