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  1. 1.
    +1
    after t seconds, the object moves 10*t meters to the right, and 1/2*g*t^2=5t^2 meters down.

    SInce the angle of the slope is 45 degrees, they must be equal to each other bastard.

    10t=5t^2 implies that t=2.

    Thus, initially the object is 10t=20 meters above the level of collision.

    Now we have to set the total kinetic+potential energies.

    1/2*m*10^2 + 20*10*m = 1/2*m*v^2

    500=v^2

    and thus, v=10*sqrt(5)

    now fuck off!
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