A Car Accelerates Uniformly from Rest to a Speed of 20

question 37

Multiple Choice

A car accelerates uniformly from rest to a speed of 20 m/s at the end of 1 min; it then accelerates uniformly to a speed of 40 m/s at the end of the next minute.During this 2-min period,the average speed of the car is

• A)7.5 m/s
• B)30 m/s
• C)15 m/s
• D)20 m/s
• E)40 m/s

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Definitions:

Tropical Rain Forest

A hot, moist biome found near the Earth's equator, characterized by high annual rainfall and a diversity of plant and animal species.

Emergent Layer

The topmost layer of a rainforest, where the tallest trees extend above the forest's general canopy, receiving most sunlight.

Species Diversity

The variety and abundance of different species within a given area, crucial for ecosystem health and resilience.