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What is work in the context of physics?
Work is the energy transferred to or from an object via the application of force along a displacement.
When does a force do positive work?
A force does positive work if it has a component in the direction of the displacement of the point of application.
Give an example of a situation where the work done by the gravitational force is positive.
When a ball is held above the ground and then dropped, the work done by the gravitational force on the ball as it falls is positive.
What is the work done by the gravitational force when a ball is thrown upwards?
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How is the work done when the force F is constant and the angle θ between the force and the displacement s is also constant?
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