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A particle moves from the point ( ) j ˆ 0 . 4 i ˆ 0 . 2 + m, at t = 0, with an initial velocity ( ) j ˆ 0 . 4 i ˆ 0 . 5 + ms –1 . It is acted upon by a constant force which produces a constant acceleration ( ) j ˆ 0 . 4 i ˆ 0 . 4 + ms –2 . What is the distance of the particle from the origin at time 2 s?

1. 15 m
2. 2 20 m
3. 2 10 m
4. 5 m

Correct answer: 2 20 m

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