1. The problem statement, all variables and given/known data A ball of mass 50g is thrown horizontally against a wall such that it strikes it at a velocity of 12ms-1. If it exerts a force of 3N on the wall, determine the time of impact. 2. Relevant equations 3. The attempt at a solution I drew the diagram and made the direction and wrote the values neatly on my paper as it's sort of a must to do this and it makes me understands the work better. Does the 50g needs to be changed and converted into kg?