A Block Is Launched Up an Inclined Plane

question 40

Multiple Choice

A block is launched up an inclined plane. After going up the plane, it slides back down to its starting position. The coefficient of friction between the block and the plane is 0.3. The speed of the block when it reaches the starting position on the trip down:

• A) is the same as the launching speed.
• B) is less than the launching speed.
• C) is more than the launching speed.
• D) cannot be compared to the launch speed with the information given.

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Definitions:

Amacrine Cell

A lateral interneuron in the retina of the eye; receives signals from bipolar cells and sends signals back to them or to ganglion cells.

Bipolar Cell

A type of neuron found in the eyes that conducts signals from the photoreceptors to the ganglion cells, integral in the visual pathway.

Cone

(1) In botany, a reproductive structure in many gymnosperms that produces either microspores or megaspores. (2) In zoology, one of the conical photoreceptive cells of the retina that is particularly sensitive to bright light and, by distinguishing light of various wavelengths, mediates color vision. Compare with rod.

Compound Eye

A type of eye found in some arthropods, consisting of multiple small visual units that provide a wide field of vision and the ability to detect movement.