2. Jack and Kay(t)lin crash their bumper cars head-on to each other. Both cars (including occupants) are of equal mass: 235 kg. J’s car is faster, travelling initially at 2.8 m/s to the right, while K’s car is slower, with an initial velocity of {1.5} m/s to the left.
2. Jack and Kay(t)lin crash their bumper cars head-on to each other. Both cars (including occupants) are of equal mass: 235 kg. J’s car is faster, travelling initially at 2.8 m/s to the right, while K’s car is slower, with an initial velocity of {1.5} m/s to the left.
A. If they bounce off of each other (elastic collision), and K’s car is travelling to the right at 2.5 m/s, how fast is J’s car travelling, and in what direction?
B. They are both unhurt by the collision, which means they experienced less than 10,000N of force. What is the minimum amount of time that the collision could have taken to make this happen? (Hint: Calculate the impulse on either car, they should be the same.)
C. This collision could have caused neck injury to either student. Describe what happens to their head, neck, and car in relation to each other to cause this injury.
D. Different situation: This time, the two cars hit and stick (inelastic) together as a single unit. Which way, and how fast will they be traveling?
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