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I would begin by instructing them to draw a diagram of the problem. This would be of a cliff, labelled height s_y, with an arrow representing the ball being thrown from the top. This should be l...

A negative externality is a type of market failure that occurs when the consumption or production of a good has an external cost on a third party that is not involved in the transaction. This external cos...

The stationary points on a curve are the exact point of a maximum, minimum or point of inflection. They can be defined as points where the gradient, dy/dx = 0. You can show this by drawing a tangent to th...

2t^-2

How you structure your answer, in my opinion, will depend on how you like to write. There are several ways to structure an essay, and it might be worth you experimenting with a few before you settle on on...