# New post in Momentum

## Why is the momentum always conserved in elastic collision?

August 21st, 2022

## Question about impulse and momentum

September 21st, 2022

August 9th, 2022

## Classical mechanics and the speed of a train-mosquito collision, when perfectly rigid bodies

September 26th, 2020

## Combining Conservation Laws ~ Homework Problem Guidance

February 22nd, 2020

August 9th, 2020

## Momentum And Energy Problem

November 18th, 2020

## Is there a way to have momentum without energy

October 20th, 2020

March 1st, 2020

May 7th, 2020

## What happens to the momentum of earth-ball system when a ball is thrown upwards?

January 1st, 2021

April 9th, 2020

## Center of Mass Velocity Question

January 21st, 2020

## Determine whether the ground state is an eigenfunction of [p] and of [p^2]

November 9th, 2020

## M1 vs M2 on a frictionless surface

February 16th, 2020

July 8th, 2020

## Is the kinetic energy of an electron always $1.6 \cdot 10^{-19}~\text{J}$?

December 12th, 2020

## Angular impulse on a pivoted rod from two different points

September 26th, 2020

## Force and Laws of Motion

February 10th, 2020

## Clarification on infinite mass/momentum argument

January 24th, 2020

## Is it possible to lift yourself off from the ground?

December 14th, 2020

June 3rd, 2020

March 23rd, 2020

March 2nd, 2020

July 28th, 2020

## Translational invariance implying diagonal representation in momentum space

September 27th, 2020

April 26th, 2020

August 1st, 2022

August 1st, 2022

## Where does de Broglie wavelength $\lambda=h/p$ for massive particles come from?

November 20th, 2020