Question

Derive the third equation of motion numerically

Answer 1

Answer:

Newton's Third equation of motion

✒ We know that

✒ v = u + at

✒ Squaring both sides

✒ v² = ( u + at )²

✒ v² = u² + 2uat + a²t²

✒ v² = u² + 2a ( ut + 1/2 at² )

✒ From second equation of motion we know that ( ut +1/2 at² ) = s

✒ v² = u² +2as

Third equation of motion

✏ v² = u² + 2as

Answer 2

Answer:

$v { }^{2} = u {}^{2} + 2as$

Explanation:

v=u+at. from1st eqn

squaring both side

v2=u2+at2