Momentum

Question 1

Impulse-momentum principle

Answer 1

The impulse is equal to the change in momentum of an object

Question 2

Impulse derivation

Answer 2

I = Ft
= mat
=m((v-u)/t)t
= mv - mu

Question 3

Momentum in i and j form

Answer 3

Multiply each component of the velocity by the mass and leave in that form

Question 4

Solving conservation of momentum problems

Answer 4

1. Draw a diagram with each particle a circle with the mass inside and u above and v under with arrows to show the direction
2. Apply m1u1 + m2u2 = m1v1 + m2v2
3. State the magnitude and the direction in relation to the original direction

Question 5

Impulse using vector momentum

Answer 5

I = m(v-u)

I, v and u are vectors