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# Projectiles M2.. short but confusing question. watch

1. Alright, here are two similar questions I'm stuck on:

I'm semi-sure that it involves forming the equation of the trajectory from different pairs of information and equating coefficients. The fact the ball was hit at a different height from where it lands makes me unsure about using the range-on-horizontal-ground kind of stuff.

I don't expect you guys to solve it for me, but a solid hint would be appreciated.
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2. (Original post by SamKeene)
Alright, here are two similar questions I'm stuck on:

I'm semi-sure that it involves forming the equation of the trajectory from different pairs of information and equating coefficients. The fact the ball was hit at a different height from where it lands makes me unsure about using the range-on-horizontal-ground kind of stuff.

I don't expect you guys to solve it for me, but a solid hint would be appreciated.
I have not attempted a solution but just by looking over I think there are 2 conditions, so you should get simultaneous equations from the equation of the trajectory.

I have a bit of time late this afternoon, so if you have not solved it I will attempt the questions
3. (Original post by SamKeene)
Alright, here are two similar questions I'm stuck on:

I'm semi-sure that it involves forming the equation of the trajectory from different pairs of information and equating coefficients. The fact the ball was hit at a different height from where it lands makes me unsure about using the range-on-horizontal-ground kind of stuff.

I don't expect you guys to solve it for me, but a solid hint would be appreciated.
I did look at the first question

you do use the equation of trajectory with points (10,3.5) and (20,-0.5) relative to the projection point.
you eliminate (gsec2θ)/u2 as one lump

the required answer is trivial after that

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