collisions

[thin ginkgo]

for 2b, ms says speed of separation is v2-v1. why is it that and not v1-v2?

[haughty mountain]

thats the formula lol

v2-v1 / u1- u2 = e

[thin ginkgo]

whys that the formula ? soz if it's a silly questio

[haughty mountain]

idk the derivation of it but its that

[thin ginkgo]

okay thank u so much

[haughty mountain]

ur better off asking someone who knows tho i’m buns at ts

[silk swan]

the coefficient of restitution is defined as that ratio

[onyx cave]

its experimental

u can derive e=1 from conservation of momentum and energy thats when its elastic but if e<1 then some energy is lost

[stone coral]

e cant be negative. V1 -v2 will be make e be negative because speed of v1 is always less than v2. Because after a collision if v1 had more speed than v2 then that just means that v1 phased through v2 which dont make sense