If the velocity versus time graph of an object is a horizontal line, the object is
A) moving with constant non-zero speed.
B) moving with constant non-zero acceleration.
C) at rest.
D) moving with infinite speed.
E) none of the above

Question

Quizplus · Accepted Answer

If the velocity versus time graph is a horizontal line, it means that the velocity is not changing with time. Therefore, the object is moving with a constant non-zero speed. Option B can be ruled out as constant non-zero acceleration requires a non-horizontal velocity-time graph. Option C can also be ruled out as the object is clearly moving. Option D is incorrect as there is no such thing as infinite speed in physics. Option E is unnecessary as an answer, as one of the options must be correct.

If the Velocity Versus Time Graph of an Object Is