A particle moving in the xy plane under goes displacement s=(2i+3j)m while the constant force is given by F=(5i+2j)N.calculate the work done by the force F.

Answer 1

Take the dot product of the displacement and force vectors.

Looks like 16 joules.

Review vector dot (scalar) products

Answer 2

http://www.netcomuk.co.uk/~jenolive/vect6.html