A roller coaster of mass 80.0 kg is moving with a speed of 20.0 m/s at position A as shown in the figure.The vertical height above ground level at position A is 200 m.Neglect friction. 
(a)What is the total mechanical energy of the roller coaster at point A?
(b)What is the total mechanical energy of the roller coaster at point B?
(c)What is the speed of the roller coaster at point B?
(d)What is the speed of the roller coaster at point C?
Definitions:
Appraisal
A formal assessment process in which an employee's job performance and productivity are evaluated, typically involving feedback and discussions about development and goals.
Compensation System
A structured approach to pay and benefits that an organization offers to its employees in exchange for their work and contributions.
Customer Satisfaction Measure
Metrics or tools used to evaluate the degree to which a product or service meets or exceeds the expectations of its customers.
Staffing Efforts
The activities involved in identifying, acquiring, and managing personnel to meet an organization's needs.
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