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A ball is launched upwards at 30 degrees to horizontal with a velocity of 20 metres per second, how far does it travel before landing? (no air resistance)

Vertcal component of velocity: 20Sin(30) Rearrange suvat equation for t in terms of u, a, s t is the time in the air and is what we want, u is 20sin(30), a is -9.81 (negative since gravity pulls the ball dow...
JF
Answered by Joseph F. • Physics tutor
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To what extent was Otto von Bismarck responsible for the unification of Germany?

Otto von Bismarck was one of the most influential statesmen of the 19 th century. His role in the unification of Germany is widely debated. He was very significant in bringing about a united Germany, even if...
DS
Answered by Donatus S. • History tutor
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What are the 5 conditions for the Hardy Weinburg equiliberium? And if all of these conditions are met what does the equiliberium state?

The 5 conditions are: Large population, rnadom mating, no mutations, no migration (immegration or emmigration from the population) and no natural selection. If all those conditions are met it states that the...
SE
Answered by Suzannah E. • Biology tutor
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Why is the human heart system described as double circulatory?

The human heart system is described as double circulatory becasue is has two seperate circuits. The first carries blood between the heart and the lungs and is known as the pulmonary circuit and the second ca...
SE
Answered by Suzannah E. • Biology tutor
9761 Views

How can I show that the lines between sets of points are perpendicular?

For example, A(6/5, 19/5), B(2, 9/5), C(5, 3). Show that the line segments AB and BC are perpendicular. Before we begin the question, it is a good idea to remind ourselves of the definition of two lines bein...
TD
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