QUESTIONS :

1. Throughout a time interval, while the speed of a particle increases as it moves along the x axis, its velocity and acceleration might be negative and positive, respectively.

2. A ball in a free fall motion has its acceleration that is directed downward both ascent and descent.

3. A bullet shot horizontally from a gun strikes the ground at approximately the same time as one dropped vertically from the same point at the same instant.

4. A stone is tied to a string and whirled at constant speed in a horizontal circle. The speed is then doubled without changing the length of the string. Afterward the magnitude of the acceleration of the stone is twice as great.

CHOICES :

A. TRUE

B. FALSE