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A body is moving with a constant velocity of 4î + 3ĵ, starting from the origin. What will be the position of the body after 10s?

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A body is moving with a constant velocity of 4î + 3ĵ, starting from the origin. What will be the position of the body after 10s?

(a) 40î + 30ĵ

(b) 30î + 40ĵ

(c) 30î – 40ĵ

(d) 40î – 30ĵ

The question was posed to me in semester exam.

The doubt is from Motion in a Plane topic in division Motion in a Plane of Physics – Class 11

1 Answer

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The correct choice is (a) 40î + 30ĵ

The explanation: The body’s displacement is given by s = vt. The body starts from the origin hence, the total displacement is the final position of the body. Therefore, after putting in the values, we get, s = (4î + 3ĵ)*10 = 40î + 30ĵ.

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