Use the worked example above to help you solve this problem. In a crash test, a car of mass 1.59  103 kg collides with a wall and rebounds as shown in the figure. The initial and final velocities of the car are vi = -15.6 m/s and vf = 2.39 m/s, respectively. If the collision lasts for 0.164 s, find the following. (a) the impulse delivered to the car due to the collision (b) the size of and direction of the average force exerted on the car (Indicate the direction with the sign of your answer.)

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