A block of mass 0.50 kg travels with a speed of 2.0 m/s in the +x-direction on a flat, frictionless surface. On passing through the 

▲ FIGURE 4.10 Off the straight and narrow A force is applied to a moving block when it reaches the origin, and the block then begins to deviate from its straight-line path. The vector components are shown in the box. origin, the block experiences a constant force of 3.0 N at an angle of 60° relative to the x-axis (in the x – y plane) for 1.5 s (▲ Figure 4.10, which is a view of the surface from above). What is the velocity of the block at the end of this time? THINKING IT THROUGH. With the force at an angle to the initial motion, it would appear that the solution is complicated. But

note in the insert in Figure 4.10 that the force can be resolved into components. The motion can then be analyzed in each component direction.

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60 F iew) FI ( view)