Question

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Answer 1

Explanation:

I don't know sorry for late

Answer 2

Answer : We will use both of the equations of motion to reach the third equation of motion. This will require a bit of algebra

S=ut+ 1/2at^2 and v=u+at,include the time variant t

There will be some situations when we do not have any information about time and so it would be a good idea to derive an equation that does not have a t term.

To do this, we rearrange our first equation to get

t= v-u/a

and use this to replace t wherever it appears in the ssecond equation .so

The next steps r in photo

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