You can use distance–time graphs to calculate speed / acceleration. The steeper the gradient, the slower / faster the speed / acceleration. You can use.

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Presentation transcript:

You can use distance–time graphs to calculate speed / acceleration. The steeper the gradient, the slower / faster the speed / acceleration. You can use velocity-time graphs to calculate speed / acceleration. The steeper the gradient, the slower / faster the speed / acceleration. Q) A police car travels 6000 metres in 500 seconds. Calculate the average speed with units. Q) An object speeds up from 2 m/s to 6 m/s in 2 seconds. Find its acceleration with units.

Falling objects L.O.:  Use the equation weight = mass x gravitational field strength.  Describe the forces acting on a falling object.  Explain what terminal velocity is.

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The weight of an object is the force of the gravity on it. The mass of an object is the quantity of matter in it. weight = mass x gravitational field strength.

motion of a parachutist

If an object falls in a fluid, the fluid drags on the object. The drag force increases with speed. If the fluid is air, the drag force is called air resistance.

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Falling objects L.O.:  Use the equation weight = mass x gravitational field strength.  Describe the forces acting on a falling object.  Explain what terminal velocity is.