[size=4]A stone is thrown horizontally and follows the path XYZ shown. The direction of the acceleration of the stone at point Y is:[/size]



[size=4][cmimg]0/12627174_67Q6IU2C.png[/cmimg][/size]

[size=4]If an object moves with a constant speed in a circular path, what can be said about its acceleration?[/size]



[size=4][cmimg]0/12627174_GIFW5UWG.png[/cmimg][/size]

[size=4]A young girl wishes to select one of the frictionless playground slides, illustrated below, to give her the greatest possible speed when she reaches the bottom of the slide. Which of the slides illustrated in the diagram below should she choose?[/size]



[size=4][cmimg]0/12627174_JNYBYVHV.png[/cmimg][/size]

[size=4]A stone thrown from the top of a tall building follows a path that is:[/size]



[size=4][cmimg]0/12627174_1T904KWG.png[/cmimg][/size]

[size=4]Identical guns fire identical bullets horizontally at the same speed from the same height above level planes, one on the Earth and one on the Moon. Which of the following three statements is/are true?



I. The horizontal distance traveled by the bullet is greater for the Moon.

II. The flight time is less for the bullet on the Earth.

III. The velocity of the bullets at impact are the same.[/size]