A Cart Starts from Rest and Accelerates Uniformly at 4

question 29

Multiple Choice

A cart starts from rest and accelerates uniformly at 4.0 m/s² for 5.0 s.It next maintains the velocity it has reached for 10 s.Then it slows down at a steady rate of 2.0 m/s² for 4.0 s.What is the final speed of the car?

• A)20 m/s
• B)16 m/s
• C)12 m/s
• D)10 m/s

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Definitions:

Puzzles to Solve

Puzzles to solve are problems or challenges that require critical thinking and problem-solving skills to find a solution.

Cognitive Miser

A theory suggesting that humans, to save mental energy, prefer to solve problems in the simplest way possible rather than in a more sophisticated but effort-intensive way.

Mentally Lazy

A reluctance or lack of desire to engage in cognitive tasks or challenges, preferring minimal mental effort or thought.

Process-oriented

Focused on the methods and procedures of accomplishing tasks or understanding phenomena, rather than solely on outcomes.