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Compare and contrast elastic and inelastic collisions

An elastic collision is a collision where there is no loss of kinetic energy. Therefore, it can be said that, since KE is conserved, momentum is conserved. In other words the momentum and total kinetic en...

Answered by Matt R. • Physics tutor

14603 Views

"j'ai cueilli des fleures"; "je les ai cueillies". Why does the participle on the one hand take an "i" at the end, and on the other hand an "ies"?

This is an example of how the agreement of the past particle works with the auxiliary "avoir" (have), "j'ai" at the first person singular. The agreement of the past particle with the a...

Answered by Jean-Gabriel T. • French tutor

2206 Views

How do you write a good essay?

There are four key elements that are vital to writing a good essay: argumentation, clarity, fully explained points, and concision. Before you begin writing an essay, you must know exactly what you are goi...

Answered by Sally S. • History tutor

2899 Views

How can I find the size of an angle in a right-angled triangle if I know the lengths of two of the sides?

We can find any angle in a right-angled (RA) triangle if we know the lengths of two of the sides, using SohCahToa.
The first step is to identify which of the sides we know. There are three sides in a...

Answered by Sarah M. • Maths tutor

3810 Views