Question

pregunta 1 (20 puntos) the graph below shows the motion of several objects over a certain period of time. different objects are depicted by letters. which letter corresponds to an object that moving at constant speed at some point in its motion? there may be more that one answer; pick all that apply. velocity time a b c d e f a a b b c c d d e e f f g none

Explanation:

Step1: Recall speed - velocity relationship

Speed is the magnitude of velocity. Constant speed means the magnitude of velocity does not change.

Step2: Analyze the graph

On a velocity - time graph, a horizontal line represents constant velocity (and thus constant speed if velocity is non - zero). A non - horizontal line represents changing velocity.

Step3: Identify the objects

Object A has a constant positive velocity, so it has a constant speed. Object D has a constant zero velocity (speed is also zero, which is a constant value). Object F has a constant negative velocity, so it has a constant speed.

Answer:

a. A
d. D
f. F