A Ball Rolls Over the Edge of a Platform with Only

question 1

Multiple Choice

A ball rolls over the edge of a platform with only a horizontal velocity.The height of the platform is 1.6 m and the horizontal range of the ball from the base of the platform is 20 m.What is the horizontal velocity of the ball just before it touches the ground? Neglect air resistance.

• A)35 m/s
• B)9.8 m/s
• C)20 m/s
• D)4.9 m/s
• E)70 m/s

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Definitions:

Cerebral Cortex

The outer layer of the cerebrum in the brain, involved in high-level functions such as sensory perception, reasoning, and voluntary muscle activity.

Sympathetic Nervous System

Part of the autonomic nervous system that activates what is often termed the fight or flight response.

Cerebellum

A portion of the brain involved in coordinating movement and balance, located beneath the cerebral hemispheres.

Complex Action Planning

A cognitive process involving the formulation, sequencing, and implementation of difficult, multistep actions aimed at achieving a specific goal.