Question

5 multiple choice 0.5 points
reading: a particle has instantaneous velocity $v_x = -25$ m/s along a line. what is its instantaneous speed?
-25 m/s
0 m/s
25 m/s
cannot be determined without acceleration

Explanation:

Instantaneous speed is the magnitude of instantaneous velocity, meaning it is a positive scalar quantity that ignores the direction indicated by the negative sign in velocity.

Answer:

25 m/s