A roller coaster containing 3 cars is accelerating at 10 m/s before it comes to an abrupt stop at the end of the ride. The mass of one car is 300kg. How much force was exerted on the roller coaster to bring it to a stop?

What if the united states, mexico, and canada took the eu’s example and joined to forms north american union ? based on your knowledge of the europe union, describe two setbacks or hurdles that this idea might face

Globalization and technology developments have led to what some individuals have described as "flat world." what is the significance of the flat world concept? what is the impact of the flat world on supply chain requirements and strategies?

What is the cause of their extinction