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    For part (a), I got 2i + j m/s, can someone tell me how to start part (b)?

    Thanks
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    (Original post by ℓove)
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    For part (a), I got 2i + j m/s, can someone tell me how to start part (b)?

    Thanks
    A particle moves in the direction of its velocity so the direction of motion of the particle relative to \mathbf{i} is the direction that the velocity vector makes with \mathbf{i}.

    So you'll need a diagram with the velocity vector and see if you can use trig to find the angle. Please post your working and diagram if you get stuck.
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    (Original post by notnek)
    A particle moves in the direction of its velocity so the direction of motion of the particle relative to \mathbf{i} is the direction that the velocity vector makes with \mathbf{i}.

    So you'll need a diagram with the velocity vector and see if you can use trig to find the angle. Please post your working and diagram if you get stuck.
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    Thanks I know what to do
 
 
 
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