A force pushes an object along two straight segments on a smooth horizontal surface

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

20\,\text{N}

force pushes an object along two straight segments on a smooth horizontal surface. First, the object moves

3.0\,\text{m}

in the same direction as the force. The force then changes direction (its magnitude is unchanged) and makes a

120^{\circ}

angle with a second

2.0\,\text{m}

displacement. What is the total work done by the force during the entire motion? (a)

80\,\text{J}

(b)

100\,\text{J}

(c)

40\,\text{J}

(d)

60\,\text{J}