Work-Energy Theorem (Grade 12 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What do conservative forces do to mechanical energy in a system?
What do conservative forces do to mechanical energy in a system?
They conserve it, keeping it constant
Which of the following is an example of a non-conservative force?
Which of the following is an example of a non-conservative force?
Friction
What happens when a non-conservative force does positive work on an object?
What happens when a non-conservative force does positive work on an object?
The object gains energy
A ball rolls on a smooth surface from A to B. How does compare to ?
A ball rolls on a smooth surface from A to B. How does compare to ?
The work-energy theorem states that equals what?
The work-energy theorem states that equals what?
A 1 kg brick falls from 10 m. What work is done on it? (Use m·s)
A 1 kg brick falls from 10 m. What work is done on it? (Use m·s)
98 J
A 1000 kg car at 16.7 m·s brakes with 8000 N force. What is the stopping distance?
A 1000 kg car at 16.7 m·s brakes with 8000 N force. What is the stopping distance?
17.4 m
A 2 kg block completes a round trip on a 10 m incline. What is its final speed?
A 2 kg block completes a round trip on a 10 m incline. What is its final speed?
9.90 m·s
What angle is used when force opposes displacement in ?
What angle is used when force opposes displacement in ?
Why does the normal force do no work on a block sliding on an incline?
Why does the normal force do no work on a block sliding on an incline?
It's perpendicular to motion