A Rock Is Thrown from Ground Level at Some Angle

question 61

Multiple Choice

A rock is thrown from ground level at some angle above the horizontal with a certain velocity. It reaches its highest point and starts falling down. What is the magnitude of the velocity of the rock right before it hits the ground?

• A) It is equal to its initial vertical velocity.
• B) It is equal to its initial horizontal velocity.
• C) It is equal to the magnitude of its initial velocity.
• D) 0
• E) Cannot be determined without additional information.

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