Work (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
Which TWO conditions must be met for work to be done on an object?
Which TWO conditions must be met for work to be done on an object?
Force applied & displacement occurs
In the formula , what does represent?
In the formula , what does represent?
Angle between force & displacement vectors
What does represent in the work formula?
What does represent in the work formula?
Component of force parallel to motion
When is positive work done on an object?
When is positive work done on an object?
When
In which scenario is NO work done?
In which scenario is NO work done?
Holding heavy object stationary overhead
A force of 400 N pushes a trolley 15 m in the direction of the force. Calculate work done.
A force of 400 N pushes a trolley 15 m in the direction of the force. Calculate work done.
6000 J
Calculate work done pulling a box 8 m with 50 N force at 60° to horizontal.
Calculate work done pulling a box 8 m with 50 N force at 60° to horizontal.
200 J
During weightlifting, when is work done on the weights?
During weightlifting, when is work done on the weights?
Only during lifting phase when moving up
What is the unit of work?
What is the unit of work?
Joule (J)
A braking force of 200 N opposes a car's motion over 30 m. What is the work done?
A braking force of 200 N opposes a car's motion over 30 m. What is the work done?
-6000 J