Question

Which of the following graphs could correctly represent the motion of an object moving with a constant speed in a straight line?

(A) Graph I only 

(B) Graphs II and V only 

(C) Graph II only 

(D) Graphs I and IV only 

(E) All of the above graphs represent constant velocity

Answer 1

Correct option (D) Graphs I and IV only

Constant speed is a constant slope on a position-time graph, a horizontal line on a velocity time graph or a zero value on an acceleration-time graph.