1. The problem statement, all variables and given/known data in accelaration is it must for a force to be involved? is it must for accelaration to be constant in absence of force? 2. Relevant equations f=ma 3. The attempt at a solution well as far as my attempt goes for both q i am getting only one ans and that is yes. but the actual answers are different,i.e,no. i thought lot but i cant gety at it. kindly help.