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A ball is dropped from rest at a height of 2 metres. Assuming acceleration due to gravity (g) is 10m/s^2 calculate the velocity of the ball just before it hits the floor.

Using the equation V 2 = U 2 + 2 a s, where V = final velocity, U = initial velocity, a = acceleration, s = displacement, we can substitute in the values given in the question to calculate the final velocity...
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Answered by Phil B. • Physics tutor
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When a particle travels in a circle of radius r, at constant speed v, what is its acceleration

v 2 /r, towards the center of the circle.Remember that acceleration is the rate of change of velocity , not merely of speed. This means that the change in direction is important. In a unit of time, the veloc...
Answered by • Physics tutor
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Find the stationary points on the curve: y = x^3 + 3x^2 +2x+5

Firstly differentiate the function: f(x) = x 3 + 3x 2 + 2x + 5 (function)f'(x) = 3x 2 + 6x + 2 (gradient function) Stationary points are points where the graph has a gradient of zero 3x 2 + 6x + 2 = 0 In ord...
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Answered by Nicolas C. • Maths tutor
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'The personalities of the early Stuart monarchs were responsible for a breakdown in relations betweeen Crown and Parliament in the years 1604 to 1629' Assess the validity of this view. [25]

James I was a devout believer in the Divine Right of Kings and firmly drew the lines between Royal Prerogative and Parliamentary Privilege which contributed greatly to the numerous problems in the relationsh...
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Answered by Theo W. • History tutor
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What is the difference between competitive and non-competitive inhibition?

A competitive inhibitor has a similar shape to the substrate which an enzyme catalyses. Because of this they block the active site of the enzyme (the site on the enzyme that is complementary in shape to a sp...
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Answered by Austin I. • Biology tutor
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