Man Ejects from Car at 50km/hr: Momentum Calculation

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A man with a mass of 80kg drives a car weighing 1600kg off a 20m cliff at a speed of 150km/hr. Upon ejection from the car at a speed of 50km/hr, the calculations focus on determining his entry speed into the water. The direction of ejection significantly affects the final speed, but it remains unspecified in the discussion. The importance of using the correct unit of kilometers per year instead of kilometers per hour is also highlighted. Accurate momentum calculations are essential for understanding the dynamics of the situation.
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Homework Statement


A man (mass 80kg) reaches the edge of a 20m cliff in his car (mass 1600kg) at a speed of 150km/hr. He drives off the edge without a change in velocity.

Calculate the speed at which he enters the water if he ejects from his car at 50km/yr just as the car reaches the water?
 
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Show what you've done so far.

Also, the direction of ejection is not mentioned. That is crucial.
 
Hmm...kilometres per year is an interesting unit.
 

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