Homework Answers
kinetic energy = p^2 / 2m
p = sqrt ( 2mK)
where m = mass of the object
K = kinetic energy
since p1 = p2
sqrt(2m1K1) = sqrt ( 2m2K2)
m2/m1 = K1/K2
since m2/m1 is greater than 1
K1/K2 > 1
K2 < K1
object 1 has higher kinetic energy than object 2
An object of mass m1 = 4.00 kg is tied to an object of mass m2...
An object of mass m1 = 4.00 kg is tied to an object of mass m2 = 3.40 kg with String 1 of length ℓ = 0.500 m. The combination is swung in a vertical circular path on a second string, String 2, of length ℓ = 0.500 m. During the motion, the two strings are collinear at all times as shown in the figure. At the top of its motion, m2 is traveling at v = 5.30 m/s. Two...
Object A has a mass of m, object B has a mass of m/2, and object...
Object A has a mass of m, object B has a mass of m/2, and object C has a mass of 2m. (a) If all three objects have the same momentum, rank them in order of increasing kinetic energy. (b)For the same three masses as before, now assume that the objects have the same kinetic energy, and rank them in order of increasing momentum.
Problem 1 An object of mass m1 travels through empty space at a constant speed until...
Problem 1 An object of mass m1 travels through empty space at a constant speed until it strikes and sticks to a second object. As observed from the frame where the second object is motionless, the first object was traveling at a speed of vi. In that same frame, both objects travel at a speed of v after the collision. a. What is the general expression for the mass of the second object in terms of mi, vi, and v?...
1 .How is momentum of a body affected by its speed? by its mass? 2. Momentum...
1 .How is momentum of a body affected by its speed? by its mass? 2. Momentum can be expressed in a. N/s b. N.s c. N.m d. N.m/s 3.When the velocity of a moving object is doubled, a. its acceleration is doubled c. its kinetic energy is doubled b. its momentum is doubled d. its potential energy is doubled 4.A body at rest has a. constant speed b. zero momentum c. zero kinetic energy d. variable speed...
Two objects with masses represented by m1 and m2 are moving such that their combined total...
Two objects with masses represented by m1 and m2 are moving such that their combined total momentum has a magnitude of 18.5 kg · m/s and points in a direction 71.5°above the positive x-axis. Object m1 is moving in the x direction with a speed of v1 = 2.75 m/s and m2 is moving in the y direction with a speed of v2 = 3.22 m/s. Determine the mass of each object in kilograms. m1= kg m2= kg
Block 1, of mass m1, moves across a frictionless surface with speed ui. It collides elastically with block 2, of mass m2...
Block 1, of mass m1,
moves across a frictionless surface with speed ui. It collides
elastically with block 2, of mass m2, which is at rest (vi=0).
(Figure 1) After the collision, block 1 moves with speed uf, while
block 2 moves with speed vf. Assume that m1>m2, so that after
the collision, the two objects move off in the direction of the
first object before the collision.Part
BWhat is the final speed uf of block 1?Express uf in terms...
Problem 5 Two objects, with mass ratio mi :m2 4 1, are sliding without friction on a horizontal s...
Problem 5 Two objects, with mass ratio mi :m2 4 1, are sliding without friction on a horizontal surface. They are sliding towards the right, as shown in the figure. Both objects have the same speed v. The rightmost object is about to collide with a wall Then, a sequence of collisions involving the two objects and the wall will ensue. Your task is to figure out what is this sequence of collisions, and what are the velocities of both...
Two objects are sitting on a frictionless surface. Object 1 has mass mi, while object 2...
Two objects are sitting on a frictionless surface. Object 1 has mass mi, while object 2 has twice as large a mass, m2=2mı. You push with force F on object 1 for 3 s, and then push on object 2 for the same length of time with the same force F. A. After the push, what is the ratio of the momentum of object 2 to the momentum of object 1? Explain your answer. [5] a) 4/1 b) 2/1 c)...
Two blocks with different masses m1 and m2 and m1 is larger than m2. They are...
Two blocks with different masses m1 and m2 and m1 is larger than m2. They are attached to either end of a light rope that passes over a light, frictionless pulley suspended from the ceiling. The mass are released from rest, and the more massive one starts to descend. After this block has descended 1.6 m, its speed is 2.2 ms-1. If the total mass is 4.1 kg, what is the mass of the heavier block m1 (unit is kg)?...
The figure below shows an object of mass m1 = 1.0 kg on an inclined surface....
The figure below shows an
object of mass m1 = 1.0 kg on an inclined surface. The angle of the
inclined surface is θ = 30° with the horizontal. The object m1 is
connected to a second object of mass m2 = 2.5 kg on a horizontal
surface below an overhang that is formed by the inclined surface.
Further, an external force of magnitude Fext = 10 N is exerted on
the object with mass m1. We observe both objects...
Problem 1 An object of mass m1 travels through empty space at a constant speed until it strikes and sticks to a second object. As observed from the frame where the second object is motionless, the first object was traveling at a speed of vi. In that same frame, both objects travel at a speed of v after the collision. a. What is the general expression for the mass of the second object in terms of mi, vi, and v?...
Block 1, of mass m1,
moves across a frictionless surface with speed ui. It collides
elastically with block 2, of mass m2, which is at rest (vi=0).
(Figure 1) After the collision, block 1 moves with speed uf, while
block 2 moves with speed vf. Assume that m1>m2, so that after
the collision, the two objects move off in the direction of the
first object before the collision.Part
BWhat is the final speed uf of block 1?Express uf in terms...
Problem 5 Two objects, with mass ratio mi :m2 4 1, are sliding without friction on a horizontal surface. They are sliding towards the right, as shown in the figure. Both objects have the same speed v. The rightmost object is about to collide with a wall Then, a sequence of collisions involving the two objects and the wall will ensue. Your task is to figure out what is this sequence of collisions, and what are the velocities of both...
Two objects are sitting on a frictionless surface. Object 1 has mass mi, while object 2 has twice as large a mass, m2=2mı. You push with force F on object 1 for 3 s, and then push on object 2 for the same length of time with the same force F. A. After the push, what is the ratio of the momentum of object 2 to the momentum of object 1? Explain your answer. [5] a) 4/1 b) 2/1 c)...
The figure below shows an
object of mass m1 = 1.0 kg on an inclined surface. The angle of the
inclined surface is θ = 30° with the horizontal. The object m1 is
connected to a second object of mass m2 = 2.5 kg on a horizontal
surface below an overhang that is formed by the inclined surface.
Further, an external force of magnitude Fext = 10 N is exerted on
the object with mass m1. We observe both objects...
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