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## Homework Statement

Particle was thrown directly upwards. Point which is in distance “d” from the beginning of movement is passed by the particle two times. Once going upwards in time “t

_{1}” and second time going downwards in time “t

_{2}” from the beginning of the movement. What was the initial speed(v

_{0}) and the acceleration(a) of the particle?

## Homework Equations

I really do not know how to start with this example.

## The Attempt at a Solution

I have tried every possible solution that I was capable of, but I’m not able to come up with the correct answer which should be

v

_{0}=d*[(t

_{1}+t

_{2})/(t

_{1}*t

_{2})]

and

a=(2*d)/(t

_{1}*t

_{2})