Answer:
D. the mass of Henry’s space ball must be greater than his
Explanation:
The law of conservation of momentum states that the sum total of momenta of all parts of a system remains constant. The equation for momentum is defined as p=mv. Because momentum and velocity are directly proportional to each other and the momentum of Henry's ball has to be the same as Albert's, when Henry's ball's velocity is smaller, the mass needs to be bigger to equal the same as Albert's momentum. I also got this question right so hope this helps! :)
The mass of Henry's space ball must be greater than his.
As Albert believes in the conservation of momentum the space ball momentum is to be conserved.
Unless an external force is applied the total momentum will remains constant for the two bodies which are acting upon each other in an isolated system. According to the definition, in the game of space billiards the external force is applied for Henry's ball, so that the ball changes vertical velocity less than Albert's. As the force applied to the Henry's space ball, the mass of the space ball was greater.
Thus. option D is the correct answer.
Learn more about Law of conservation of momentum
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