Can a particle with zero acceleration speed up?
Therefore, no, since if the body speeds up, it should have a positive acceleration.
Read each statement below carefully and state with reasons and examples, if it is true or false; A particle in one-dimensional motion a) with zero speed at an instant may have non-zero acceleration at that instant b) with zero speed may have non-zero velocity, c) with constant speed must have zero acceleration, d) with positive value of acceleration must be speeding up.
A particle with one dimensional motion with positive value of acceleration must be speeding up.