A Box Weighing 550N Slides at Constant Speed Across a Flat

question 90

Multiple Choice

A box weighing 550N slides at constant speed across a flat parking lot,under the influence of a stiff wind.The wind applies a force of 155N parallel to the surface of the parking lot.What is the angle relative to the vertical of the contact force applied by the ground.

• A) 75\(^{\circ}\)
• B) 74\(^{\circ}\)
• C) 90\(^{\circ}\)
• D) 16\(^{\circ}\)
• E) 15\(^{\circ}\)

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Definitions:

Wild Salmon

Salmon that live and reproduce in their natural environments in oceans and rivers, not raised in captivity for commercial purposes.

Transgenic Salmon

Genetically modified salmon that have been altered to grow faster than wild-type salmon, often involving the insertion of growth hormone genes from other fishes.

Salmon Farms

Aquaculture operations specifically aimed at breeding and raising salmon in controlled environments for commercial purposes.

Pollution

The introduction of harmful substances or products into the environment, resulting in negative effects on living organisms and the natural ecosystem.