M1: all equations

Question 1

When are suvat equations used? (2)

Answer 1

if three values out of displacement, initial velocity, final velocity, acceleration, and time are given
if acceleration is constant

Question 2

v; a, t, u

Answer 2

v = u + at

Question 3

s; t, u, v

Answer 3

s = t(u + v)/2

Question 4

s; a, t, u

Answer 4

s = ut + 1/2 at^2

Question 5

s; a, t, v

Answer 5

s = vt - 1/2 at^2

Question 6

v; a, s, u

Answer 6

v^2 = u^2 + 2as

Question 7

F; a, m

Answer 7

F = ma

Question 8

a, v (equations given in terms of t) (2)

Answer 8

a = δv/δt
v = ∫a δt

Question 9

v, s (equations given in terms of t) (2)

Answer 9

v = δs/δt
s = ∫v δt

Question 10

F; h, v (where h and v are components of force F)

Answer 10

F = √h^2 + v^2

Question 11

h; F, θ (where θ is the angle between F and its horizontal component)

Answer 11

h = Fcosθ

Question 12

v; F, θ (where θ is the angle between F and its horizontal component)

Answer 12

v = Fsinθ

Question 13

Flim; R, μ

Answer 13

Flim = μR

Question 14

F; D, Fr (where F is the resultant and the motion of the particle is in the direction of D)

Answer 14

F = D - Fr

Question 15

How do you find R?

Answer 15

if an object is in equilibrium, R is equal to the force acting down on the surface (e.g. W, T…)

Question 16

p; m, v (p is momentum)

Answer 16

p = mv

Question 17

m1, m2, u1, u2, v1, v2 (particles do not coalesce)

Answer 17

m1u1 + m2u2 = m1v1 + m2v2

Question 18

m1, m2, u1, u2, v (particles coalesce)

Answer 18

m1u1 + m2u2 = (m1 + m2)v