In a particular crash test, an automobile of mass 1217 kg collides with a wall a

Question

In a particular crash test, an automobile of mass 1217 kg collides with a wall and bounces back off the wall. The x components of the initial and final speeds of the automobile are 15 m/s and 3 m/s, respectively. If the collision lasts for 0.12 s, find the magnitude of the impulse due to the collision. Answer in units of kg · m/s. In a particular crash test, an automobile of mass 1217 kg collides with a wall and bounces back off the wall. The x components of the initial and final speeds of the automobile are 15 m/s and 3 m/s, respectively. If the collision lasts for 0.12 s, find the magnitude of the impulse due to the collision. Answer in units of kg · m/s.

Explanation / Answer

Impulse = F t = m * v / t * t = mv = p = change in momentum p = 1217 kg * (15 + 3) m/s = 2.19 * 10E4 kg m /sec

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