The vertical component of the momentum is not conserved, because the net vertical force Fy–net is not zero. In the vertical direction, the space probe-Earth system needs to be considered and we find that the total momentum is conserved.
Q. What are examples of isolated systems?
An isolated system is one in which both matter and energy cannot exchange with the surroundings. Not sure if these were shared in your discussion, but some examples of isolated systems include a (very high quality) thermos bottle, a bomb calorimeter, and the universe.
Table of Contents
- Q. What are examples of isolated systems?
- Q. Why is momentum conserved in a closed system?
- Q. What does it mean when momentum is conserved?
- Q. Is impulse the same for both objects?
- Q. Can the momentum of an object change?
- Q. What is the relationship between momentum and mass?
- Q. What is the change in momentum of the ball?
Q. Why is momentum conserved in a closed system?
In a closed system, the total momentum never changes. Note that there absolutely can be external forces acting on the system; but for the system’s momentum to remain constant, these external forces have to cancel, so that the net external force is zero.
Q. What does it mean when momentum is conserved?
Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant.
Q. Is impulse the same for both objects?
Impulse is force multiplied by time, and time of contact is the same for both, so the impulse is the same in magnitude for the two trucks. Change in momentum is equal to impulse, so changes in momenta are equal.
Q. Can the momentum of an object change?
As the force acts upon the object for a given amount of time, the object’s velocity is changed; and hence, the object’s momentum is changed. An object with momentum can be stopped if a force is applied against it for a given amount of time. A force acting for a given amount of time will change an object’s momentum.
Q. What is the relationship between momentum and mass?
Mass and velocity are both directly proportional to the momentum. If you increase either mass or velocity, the momentum of the object increases proportionally. If you double the mass or velocity you double the momentum.
Q. What is the change in momentum of the ball?
This change in momentum is the result of a force imparted by the club on the ball (2nd law) acting over a given duration of time. Because the ball will exert an equal and opposite force on the club (3rd law), the force will be opposite to the final velocity of the ball. Change in momentum of the ball.
