1. Momentum of an object determines the impact it has on another object when the two...
1. Momentum of an object determines the impact it has on another
object when the two collide. Collisions can be elastic and
inelastic. Applying forces at various points of an object can make
it spin (that is due to torque). Objects at the state of rest or
moving (and adding) with constant velocity are at the state of
equilibrium. All force, energy and work considerations (including
the principle of energy conservation) can be expanded to include
rotational motion. Linear momentum as well as angular momentum are
conserved in an isolated system. How would any deviations of the
conditions we experience affect our lives? As a group, discuss and
pick a cultural aspect, human ability, natural phenomenon or
technology of mutual interest as related to the topic of the
project. Give two examples.
Homework Answers
If there are deviations in the conservation of momentum laws, the Newton's second law would itself be wrong.
There would also be energy produced or destroyed as a result. This is against the basic law of nature.
Also, if angular momentum is not conserved, then the planets would not move in their orbits.
Many such examples can be found where this law holds and would violate some of the basic rules in nature.
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1. Momentum of an object determines the impact it has on another
object when the two...
V If two particles of different masses have equal kinetic energy they also have equal momentum....
V If two particles of different masses have equal kinetic energy they also have equal momentum. The kinetic energy is always conserved both in elastic collisions and inelastic collisions. If the momentum of a single particle is zero, its kinetic energy may not be zero. The linear momentum of an object is proportional to the mass of the object. A large force always produces a larger impulse on a body than a smaller force. If the kinetic energy of a...
True and False 1. If two particles of different masses have equal kinetic energy they also...
True and False 1. If two particles of different masses have equal kinetic energy they also have equal momentum. 2. If the momentum of a single particle is zero, its kinetic energy may not be zero. 3. The kinetic energy is always conserved both in elastic collisions and inelastic collisions. 4. A large force always produces a larger impulse on a body than a smaller force. 5. If the kinetic energy of a single particle is zero, its momentum must...
8 When an object experienices unicem cinsular motion, the direction of the net fonce is b....
8 When an object experienices unicem cinsular motion, the direction of the net fonce is b. in the opposite direction of the motion of the objoct d. is directed sway from the center of the ciculr path 9. Compared to its mass on the Farth, the mass of an object on the Moon is less b. more c the same d half as moch 10. Can work be done on a system if there is no motion? b. yes, since...
1. Two asteroids collide head-on and stick together. Before the collision, asteroid A (mass 1,000 kg)...
1. Two asteroids collide head-on and stick together. Before the
collision, asteroid A (mass 1,000 kg) moved at 100 m/s and asteroid
B (mass 2,000 kg) moved at 80 m/s in the opposite direction. Use
momentum conservation (make a complete Momentum chart) to find the
velocity of the asteroids after the collision.
2. Two asteroids identical to those in (1) collide at right
angles and stick together. "Collide at right angles" means that
their initial velocities were perpendicular to each...
Object A has mass mA = 9 kg and initial momentum PA = < 15,-8,0 >...
Object A has mass mA = 9 kg and initial momentum PA = < 15,-8,0 > kgm/s, just before it strikes object B, which has mass mg = 12 kg. Just before the collision object B has initial momentum 8,1 = < 4,7,0 > kg. m/s. Consider a system consisting of both objects A and B. What is the total initial momentum of this system, just before the collision? sysj = (19,-1,0) kg.m/s The forces that A and B exert...
ms H: 10 42 11 Two equal and opposite forces of 3 N have a netforce...
ms H: 10 42 11 Two equal and opposite forces of 3 N have a netforce of A9N B6N c3N DON Which of the following is NOT a constant for an object in uniform circular motion! A distance with time speed e velocity D acceleration magnitude Work is A energy times distance, B force times distance. c force times time. D momentum times distance. You push against Plymouth Rock with a force of 100 newtons for 20.0 seconds. If the...
Linear Momentum of an object is conserved At all times b. Only when the net external...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...
Problem 1 Two identical pucks, each of inertia m, are connected to a rod of length...
Problem 1 Two identical pucks, each of inertia m, are connected to a rod of length 2r and negligible inertia that is pivoted about its center (that is, there is some sort of pin though its center, around which it can rotate without friction). A third puck of inertia m/2 strikes one of the connected pucks perpendicular to the rod with a speed vi. Assume the collision is elastic. (a) Draw a diagram of the situation, clearly labeling the direction...
1) Why is there a different equation for elastic vs inelastic collisions? Are they really different?...
1) Why is there a different equation for elastic vs inelastic collisions? Are they really different? 5) If the first car does not go through either photogate after collision, what will its velocity essentially be? The conservation of momentum is a fundamental law in classical mechanics. It states that the total momentum of a system at the initial condition and ending conditions must be equivalent or p. - P. This can be modeled by studying the effect of objects in...
Two hockey pucks approach each other as shown in the figure below. Puck 1 has an...
Two hockey pucks approach each other as shown in the figure below. Puck 1 has an initial speed of 19 m/s, and puck 2 has an initial speed of 14 m/s. They collide and some glue on one of the pucks causes them to stick together. (Assume the pucks have the same mass.) (a) If the two pucks form a ''system'' is the momentum of this system along x or y conserved? (b) Find the components along x and y...
V If two particles of different masses have equal kinetic energy they also have equal momentum. The kinetic energy is always conserved both in elastic collisions and inelastic collisions. If the momentum of a single particle is zero, its kinetic energy may not be zero. The linear momentum of an object is proportional to the mass of the object. A large force always produces a larger impulse on a body than a smaller force. If the kinetic energy of a...
8 When an object experienices unicem cinsular motion, the direction of the net fonce is b. in the opposite direction of the motion of the objoct d. is directed sway from the center of the ciculr path 9. Compared to its mass on the Farth, the mass of an object on the Moon is less b. more c the same d half as moch 10. Can work be done on a system if there is no motion? b. yes, since...
1. Two asteroids collide head-on and stick together. Before the
collision, asteroid A (mass 1,000 kg) moved at 100 m/s and asteroid
B (mass 2,000 kg) moved at 80 m/s in the opposite direction. Use
momentum conservation (make a complete Momentum chart) to find the
velocity of the asteroids after the collision.
2. Two asteroids identical to those in (1) collide at right
angles and stick together. "Collide at right angles" means that
their initial velocities were perpendicular to each...
Object A has mass mA = 9 kg and initial momentum PA = < 15,-8,0 > kgm/s, just before it strikes object B, which has mass mg = 12 kg. Just before the collision object B has initial momentum 8,1 = < 4,7,0 > kg. m/s. Consider a system consisting of both objects A and B. What is the total initial momentum of this system, just before the collision? sysj = (19,-1,0) kg.m/s The forces that A and B exert...
ms H: 10 42 11 Two equal and opposite forces of 3 N have a netforce of A9N B6N c3N DON Which of the following is NOT a constant for an object in uniform circular motion! A distance with time speed e velocity D acceleration magnitude Work is A energy times distance, B force times distance. c force times time. D momentum times distance. You push against Plymouth Rock with a force of 100 newtons for 20.0 seconds. If the...
Problem 1 Two identical pucks, each of inertia m, are connected to a rod of length 2r and negligible inertia that is pivoted about its center (that is, there is some sort of pin though its center, around which it can rotate without friction). A third puck of inertia m/2 strikes one of the connected pucks perpendicular to the rod with a speed vi. Assume the collision is elastic. (a) Draw a diagram of the situation, clearly labeling the direction...
1) Why is there a different equation for elastic vs inelastic collisions? Are they really different? 5) If the first car does not go through either photogate after collision, what will its velocity essentially be? The conservation of momentum is a fundamental law in classical mechanics. It states that the total momentum of a system at the initial condition and ending conditions must be equivalent or p. - P. This can be modeled by studying the effect of objects in...
Two hockey pucks approach each other as shown in the figure below. Puck 1 has an initial speed of 19 m/s, and puck 2 has an initial speed of 14 m/s. They collide and some glue on one of the pucks causes them to stick together. (Assume the pucks have the same mass.) (a) If the two pucks form a ''system'' is the momentum of this system along x or y conserved? (b) Find the components along x and y...
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