None of the listed responses is correct.
During a complex collision between many objects, including object A and object C, the impulse exerted on object A by object C is equal to
any change in Z for parts of the system during the process is offset by an equal but opposite change for the Z of other parts of the system
If some quantity, let's call it "Z," is conserved for a certain system, during a certain process, that must mean __________.
During the very brief collision the total momentum of the two players (the system) is a conserved quantity.
Two hockey players collide on the ice. Which statement reflects how we can apply conservation of momentum to this situation?
the net force exerted on the object times the duration of the time interval
The change in an object's momentum during a certain time interval is equal to __________.
no net external force is exerted on the system during that process
The momentum of a system is conserved during a certain process only if __________.
might have the same momentum but might not
If two cars have the same mass and speed they __________.
Somewhere south of east, but we can't be any more specific than that.
Playing in the rain, a little girl tackles a little boy. Just before she tackles him, the boy is running east at 3 m/s and the girl is running south at 4 m/s. After the tackle, the girl holds on and the two slide on the wet grass. Our system consists of j
the total momentum of the system must be zero
The image shows two balls about have a head-on collision. Ball A has a mass m and speed of 2v, whereas ball B has mass 2m and speed v. Our system consists of just the two balls and is isolated from external forces. Just after the collision
N*s
The standard units of momentum are kg*m/s. Which of these is an alternate way to express these units?
external forces on the system are present, but they are small compared to the large, brief internal forces between parts of the system
The impulse approximation is used in situations where __________.
The momentum of both children will be in the same direction.
Playing in the rain, a little girl tackles a little boy. Just before she tackles him, the boy is running east at 3 m/s and the girl is running south at 4 m/s. After the tackle, the girl holds on and the two slide on the wet grass. Our system consists of j
A skydiver (the object) with her parachute deployed falls toward the ground at a steady speed.
In which of these processes is the momentum of the object conserved?
Using the impulse approximation, conservation of momentum can be applied to the very brief time period of the collision itself (giving approximate results).
Two cars experience a collision on a city road. Both drivers are using their brakes when the cars hit. Which statement is true?
the total momentum of the system is zero
The image shows two balls about have a head-on collision. Ball A has a mass m and speed of 2v, whereas ball B has mass 2m and speed v. Our system consists of just the two balls and is isolated from external forces. Just before the collision
the total horizontal component of the momentum of the system is zero
The image shows two balls (1 and 2) that are going to collide as they approach the point marked . Ball 1 has a mass of 2m and speed v, while ball 2 has mass m and speed 2v. Both balls are moving at 45� angles with respect to the vertical. Our system consi
must have a magnitude between zero and the sum of the magnitudes of their individual momenta. Meaning The equation shows zero is less than or equal to the magnitude of vector p sub x which is less than the quantity of the magnitude of vector p sub 1 plus
Two asteroids are flying through space, each with an unknown momentum, and The equation shows vector p sub 1.The equation shows vector p sub 2.The equation shows vector p sub x.. Which of these is a true statement about the x-component of their total mome
the net impulse exerted on object C
During a large, multi-object collision that involves object C, the change in the momentum of object C is equal to __________.
They have zero total momentum.
You observe two identical balls of putty headed directly toward each other at the same speed; what can you say about their total momentum?
Z for that system does not change in any way during that process
If some quantity, let's call it "Z," is conserved for a certain system, during a certain process, that means __________.
the total momentum of the system is zero
The image shows two identical balls about have a head-on collision. Our system consists of just the two balls, both of which have the same speed. Just before the collision __________.
the object's mass times its velocity
The momentum of an object is defined as __________.
is a vector, with a magnitude and a direction
Momentum __________.
the total horizontal component of the momentum of the system must be zero
Ball 1 has a mass of 2m and speed v, while ball 2 has mass m and speed 2v. Both balls are moving at 45� angles with respect to the vertical. Our system consists of just the two balls and is isolated from external forces. Just after the collision _________
kg*m/s
The units for momentum are __________.
sqrt Rx^2+Ry^2
When vector vector A is added to vector Vector B, the resultant is vector vector R such that vector R is equal to vector A plus vector B. This resultant vector has components vector R sub x is equal to vector A sub x plus vector B sub x and vector R sub y
-A potential energy function can be specified for a nondissipative interaction
-A nondissipative interaction permits a two-way conversion between kinetic and potential energies.
Which of the following statements is/are true?
-The total mechanical energy of a system is constant only if nondissipative interactions occur.
-Mechanical energy can be dissipated to nonmechanical forms of energy.
Which of the following statements is/are true
The two objects rise to the same height.
Two objects are moving at equal speed along a level, frictionless surface. The second object has twice the mass of the first object. They both slide up the same frictionless incline plane. Which object rises to a greater height?
The maximum height of the second ball is four times that of the first ball.
Two identical balls are thrown vertically upward. The second ball is thrown with an initial speed that is twice that of the first ball. How does the maximum height of the two balls compare?