please solve all the questions (3 points) A father and daughter are stationary o
ID: 1403736 • Letter: P
Question
please solve all the questions
(3 points) A father and daughter are stationary on frictionless ice facing each other. If they push off from each other horizontally, which of the following statements is true. (there may be more than one correct answer.) (a) The acceleration of the center of mass of the father is less than that of the daughter. (b) The acceleration of the center of mass of the father is zero, while the daughter?s is not zero. (c) The acceleration of the center of mass of the father + daughter system is zero. (d) The point where their hands meet does not move. 8. (3 points) You have a choice. You may get hit head-on either by an adult moving slowly on a bicycle or by a child that is moving twice as fast on a bicycle. The mass of the child and bicycle is one-half that of the adult and bicycle. Considering only the issues of initial momentum, which collision do you prefer? Account for your answer. 9. (3 points) Could the answer to problem #8 change if other issues are considered? If so, what? If not, why not? 10. (3 points) Two cars are accelerating along a drag strip. It is observed that the distance between the two cars is increasing. What does this mean about their accelerations? (a) It tells you nothing about their accelerations. (b) It means the first car is accelerating faster. (c) It means the second car is accelerating faster. (d) It means that both cars are accelerating at the same rate.Explanation / Answer
7)
here , when father and daughter push off each other ,
according to Newon's third law of motion
the force acting on daughter and father is equal in magnitude
as acceleration = force/mass
and as the mass of daughter is less than mass of father
a) the acceleration of the centre of mass of father is less than that of the daughter
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