A 30 kg child rides a 20 kg bicycle. Together, the child and the bicycle have a momentum of 110 kg-m/s. What is the velocity of
1 answer:
Answer:
The velocity of the boy and the bicycle is 2.2 m/s.
Explanation:
We have,
Mass of child is 30 kg and the mass of bicycle is 20 kg. The combined momentum of the child and the bicycle is 110 kg-m/s.
It is required to find the velocity of the boy and the bicycle. The momentum of an object is given in terms of mass and its velocity. So,
M is combined mass of child and bicycle
So, the velocity of the boy and the bicycle is 2.2 m/s.
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Answer:
Part(A): The magnitude of Jill's final velocity is .
Part(B): The direction is south to east.
Explanation:
Given:
Mass of Jack,
Mass of Jill,
Initial velocity of Jack,
Initial velocity of Jill,
Final velocity of Jack,
The final angle made by Jack after collision,
Consider that the final velocity of Jill be and it makes an angle of
with respect to east, as shown in the figure.
Conservation of momentum of the system along east direction is given by
where, is the component of Jill's final velocity along east. The direction of this component will be along east.
Substituting the value, we have
Conservation of momentum of the system along north direction is given by
where, is the component of Jill's final velocity along north. The direction of this component will be along the opposite to north.
Part(A):
The magnitude of the final velocity of Jill is given by
Part(B):
The direction is given by
