Each of four particles moves along an x axis. Their coordinates (in meters) as functions of time (in seconds) are given by For which of these particles is the velocity increasing for t 0?
A) All four
B) Only 1
C) Only 2 and 3
D) Only 2, 3, and 4
E) None of them

Question

Each of four particles moves along an x axis. Their coordinates (in meters) as functions of time (in seconds) are given by  For which of these particles is the velocity increasing for t > 0?
A) All four 
B) Only 1 
C) Only 2 and 3 
D) Only 2, 3, and 4 
E) None of them

Quizplus · Accepted Answer

The Answer is C

Each of Four Particles Moves Along an X Axis