Which of the following statements about moving particle is correct?

• A.if the resultant force acting on the particle is zero, then it is in dynamic equillibrium
• B.If the resultant force acting on the acting on the particle is greater than zero, then it is moving with a uniform velocity
• C.the rate of change of its momentum with time tales place in a direction opposite to that of its motion
• D.the particle falling freely covers equal distances in equal time interval