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A small stone is projected vertically upwards from a point O with a speed of 19.6m/s. Modelling the stone as a particle moving freely under gravity, find the length of time for which the stone is more than 14.7 m above O

We want to find out the time during which the stone is above a certain point. As this stone is thrown upwards we know that the first time it passes this point it will be on its way up and when it passes t...

AG
Answered by Aaron G. Maths tutor
14412 Views

How do you differentiate the curve y = 4x^2 + 7x + 1? And how do you find the gradient of this curve?

To begin with, this question requires you to differentiate the curve y = 4x2 + 7x +1 in order to find the gradient. To differentiate this function y in respect to x, we need to reduce the power...

KS
Answered by Katie S. Maths tutor
4394 Views

What is the role of consideration in English contract law?

Pursuant to the common law’s economic view of contracts, the English conception of contracts requires the exchange of reciprocal obligations. It is frequently said that, historically, the fundamental purp...

MB
Answered by Marius B. G. Law tutor
3324 Views

Why does iodine have a higher boiling point than chlorine?

Neither iodine or chlorine have permanent dipoles because there is no difference in electronegativity between the atoms, so there are no permanent dipole : permanent dipole interactions. There are also no...

EE
Answered by Ellie E. Chemistry tutor
9673 Views

A curve has the equation y=3x^2-2x+7, find the gradient of the line at the point (6,3)

dy/dx = 34

BC
Answered by Ben C. Maths tutor
5317 Views

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