The time rate of change of displacement is known as? by Sunday | Aug 27 | Physics WAEC | 0 comments A. speed B. velocity C. impulse D. acceleration Correct Answer: Option B – velocity Users Also Read These:The slope of the straight line displacement-time…If the change in free energy of a system is -899…The amount of energy required to change a kilogram…The sudden change in a gene structure or chromosome…The slope of a straight line displacement time graph…