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Classical PhysicsYear 10 Pathway C

Mr. D. Patterson

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Define work as the product of pushing an object (F) over a distance (s)

Solve problems using W = Fs = mas

Outcomes

What would you call more work? Lifting a pen off the floor or lifting a brick off

the floor?

•Pushing a wheelbarrow across a driveway or pushing the same wheelbarrow up the street?

What makes each one require more work?

Work Work is the product of the displacement an

object moves and the net force applied to the object in that same direction.

W = work (J) F = force (N) s = displacement (m) m= mass (kg) a = acceleration (ms-2)

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How much work is done dragging a body for the mafia with a force of 30 N for 200 m?

Example

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How much work is done pushing a macbook air up Mt Everest?

hint: Mt Everest is 9 km high and a macbook air has a mass of 1 kg

Example

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Define work as the product of pushing an object (F) over a distance (s)

Solve problems using W = Fs = mas

Matthews and Winter Set 21

Outcomes