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# m1 help vectors

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1. i have no clue how to do this

A particle P moves in a straight line with constant velocity. Initially P is at the point A with position vector (2i − j) m relative to a fixed origin O, and 2 s later it is at the point B with position vector (6i + j) m.

the velocity is 2i+j

Find, in degrees to one decimal place, the size of the angle between the
direction of motion of P and the vector i.
2. (Original post by yeah1106)
i have no clue how to do this

A particle P moves in a straight line with constant velocity. Initially P is at the point A with position vector (2i − j) m relative to a fixed origin O, and 2 s later it is at the point B with position vector (6i + j) m.

the velocity is 2i+j

Find, in degrees to one decimal place, the size of the angle between the
direction of motion of P and the vector i.
try not post dupes, pls be patient Zacken close this thread and use this instead?
http://www.thestudentroom.co.uk/show....php?t=4010495
3. (Original post by thefatone)
try not post dupes, pls be patient Zacken close this thread and use this instead?
http://www.thestudentroom.co.uk/show....php?t=4010495
Thanks. Closed now. Link to dupe above.

Updated: April 11, 2016
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