A Car Starts from Rest and Goes Down a Slope

question 18

Multiple Choice

A car starts from rest and goes down a slope with a constant acceleration of 5 m/s². After 5 seconds the car reaches the bottom of the hill. Its speed at the bottom of the hill, in meters per second, is:

• A) 1
• B) 12.5
• C) 25
• D) 50
• E) 160

Identify the parts of a microscope and their functions.

Demonstrate proper steps for preparing and viewing a specimen under a microscope.

Recognize the importance of using a coverslip in wet-mount preparation.

Control magnification through correct selection and use of objective lenses.

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Definitions:

Antipodal Nuclei

Cells located at the opposite end of the embryo sac in flowering plants, often playing a role in nourishment and development of the embryo but undergoing degeneration in many species.

Imbibition

The absorption of water by plant tissues, particularly seeds, leading to swelling and the initiation of germination.

Oxygen

A chemical element with symbol O and atomic number 8, essential for most forms of life on Earth, involved in breathing and combustion processes.

Generative Cell

In plant biology, a cell within the pollen grain that divides to form two sperm cells during the process of fertilization.