Question

A graph is critical nonplanar if it is nonplanar, but any subgraph obtained by removing a vertex is planar. Show that a critical nonplanar graph exists.

a. True
b. False

Answer 1

The position versus time graph of an object that is speeding up is not a straight line, but rather a curve that indicates acceleration, typically a parabola for uniform acceleration.

Step-by-step explanation:

The statement that the position versus time graph of an object that is speeding up is a straight line is false. When an object is speeding up, its velocity is changing, which indicates acceleration. If the acceleration is constant, the position versus time graph will be a curve that gets steeper over time. This curve is typically a parabola for uniformly accelerated motion, not a straight line. A straight line on a position versus time graph would indicate that the object is moving at a constant velocity, not accelerating.