Monday

September 22, 2014

September 22, 2014

Posted by **Mario** on Thursday, October 1, 2009 at 12:27pm.

- Physics -
**MathMate**, Thursday, October 1, 2009 at 6:15pmForce vector, F:

(2.3cos(100°),2.3sin(100°)) N

Displacement vector, D:

(3,4.4) m

Work done = F.D (dot product of the two vectors) J

A dot product between two vectors A(ax,ay) and B(bx,by) is a scaler calculated as

A.B = ax*bx + ay*by

See also:

http://en.wikipedia.org/wiki/Dot_product

**Answer this Question**

**Related Questions**

Physics - A coin slides over a frictionless plane and across an xy coordinate ...

Physics - A coin slides over a frictionless plane and across an xy coordinate ...

Physics - A coin slides over a frictionless plane and across an xy coordinate ...

maths - geometry - In a space with an orthonormal coordinate system consider the...

Math - 19. Point A(4, 2) is translated according to the rule (x, y) (x + 1, y – ...

physics - a particle of mass m moves in a x-y plane. The coordinates of the ...

physics - The most convenient way to express vectors in the two dimensional ...

physics - The most convenient way to express vectors in the two dimensional ...

physics - The most convenient way to express vectors in the two dimensional ...

physics - The most convenient way to express vectors in the two dimensional ...