Consider an inelastic collision between balls of mass m1 and m2. The velocities before the collision are 1 and 2, respectively, and the velocities after the collision are 1 and 2, respectively. Which of the following statements concerning this collision is true?

A) B) 2 - 1 > 1 - 2 C) 2 - 1 = 1 - 2 D) 2 - 1 1 - 2 E) A) B) 2 - 1 > 1 - 2 C) 2 - 1 = 1 - 2 D) 2 - 1 1 - 2 E)

Use the picture to the right to answer the next question. A puck of mS1U1B11S1U1B0 and moving with velocity vS1U1B11S1U1B0 collides elastically with a second puck of mass mS1U1B12S1U1B0, which is initially at rest. After the collision, mS1U1B11S1U1B0 moves with velocity vS1U1B11S1U1B0' at an angle$\theta$ below the x axis and mS1U1B12S1U1B0 moves with velocity vS1U1B12S1U1B0' at an angle $\theta$ above the x axis. -Which of the following statements is true?

A) Momentum is conserved in the x direction. B) Momentum is conserved in the y direction. C) The total momentum before equals the total momentum after the collision. D) The kinetic energies are conserved. E) All of the above statements are true. A) Momentum is conserved in the x direction. B) Momentum is conserved in the y direction. C) The total momentum before equals the total momentum after the collision. D) The kinetic energies are conserved. E) All of the above statements are true.

Two billiard balls are traveling to the right with speeds v1 = +0.5 m/s and v2 = +0.3 m/s. If m1 = 2.5m2, calculate the velocity of m1 after it catches up to and impacts m2. The speed of m2 after the collision is +0.55 m/s.

A) -0.35 m/s B) +0.25 m/s C) +0.75 m/s D) +0.35 m/s E) +0.40 m/s A) -0.35 m/s B) +0.25 m/s C) +0.75 m/s D) +0.35 m/s E) +0.40 m/s

Exam 8: Systems of Particles and Conservation of Linear Momentum

Two students, sitting on frictionless carts, push against each other. Both are initially at rest and the mass of student 1 and the cart is M, and that of student 2 and the cart is 1.5M. If student 1 pushes student 2 so that she recoils with velocity , what is the velocity of student 2.

(Multiple Choice)

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Question 81

A 40 kg boy, on a stunt, jumps from one ice sled to another sled placed next to the first one, and then quickly jumps back to the first one. The horizontal speed relative to the ice for each jump is 2 m/s and the mass of each sled is 20 kg. What is the speed of the second sled after the second jump? Assume that there is no friction between the sled and the ice.

(Multiple Choice)

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Question 82

Consider an inelastic collision between balls of mass m₁ and m₂. The velocities before the collision are ₁ and ₂, respectively, and the velocities after the collision are ₁ and ₂, respectively. Which of the following statements concerning this collision is true?

(Multiple Choice)

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Question 83

You shoot an arrow with a mass of 0.54 kg from a bow. The bow exerts a force of 125 N for 0.65 s. The speed of the arrow as it leaves the bow is

(Multiple Choice)

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Question 84

A helium atom (mass = 4m) moving with speed V collides elastically with a tritium (hydrogen 3 ) atom (mass = 3m) at rest. Calculate the speed of the tritium atom after the collision.

(Multiple Choice)

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Question 85

A woman on a spaceship traveling at a velocity ₀ in free space runs forward and then suddenly stops. When she stops, the center of mass of the system (that is, the ship and the woman)

(Multiple Choice)

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Question 86

Use the picture to the right to answer the next question. A puck of m₁ and moving with velocity v₁ collides elastically with a second puck of mass m₂, which is initially at rest. After the collision, m₁ moves with velocity v₁' at an angle $\theta$ below the x axis and m₂ moves with velocity v₂' at an angle $\theta$ above the x axis. $Use the picture to the right to answer the next question. A puck of m1 and moving with velocity v1 collides elastically with a second puck of mass m2, which is initially at rest. After the collision, m1 moves with velocity v1' at an angle \theta below the x axis and m2 moves with velocity v2' at an angle \theta above the x axis. -Which of the following statements is true?$ -Which of the following statements is true?

(Multiple Choice)

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Question 87

Vectors and are the momentum vectors of two equal masses, m₁ and m₂. A third equal mass, m₃, has a momentum such that when the three masses collide and stick together the combined mass has zero velocity. The vector that best represents the momentum of mass m₃ is

(Multiple Choice)

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Question 88

If the momentum of a mass M is doubled, its kinetic energy will be multiplied by a factor of

(Multiple Choice)

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Question 89

Two billiard balls are traveling to the right with speeds v₁ = +0.5 m/s and v₂ = +0.3 m/s. If m₁ = 2.5m₂, calculate the velocity of m₁ after it catches up to and impacts m₂. The speed of m₂ after the collision is +0.55 m/s.

(Multiple Choice)

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Question 90

A bullet (mass = m) is fired at speed V into a block of mass M (with M>m) which is hanging vertically from a light string of length L. The bullet stops in the block. If the recoiling block + bullet system reaches a height of 2/3L, then the initial speed of the bullet is given by

(Multiple Choice)

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Question 91

A golf ball and a Ping-Pong ball are dropped in a vacuum chamber. When they have fallen halfway to the floor, they have the same

(Multiple Choice)

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Question 92

Two bodies A and B move toward each other with speeds of 80 cm/s and 20 cm/s, respectively. The mass of A is 140 g and that of B is 60 g. After a head-on, perfectly elastic collision, the speed of B is

(Multiple Choice)

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Question 93

A car having a total mass of 2250 kg and traveling at 72.0 km/h smashes into a tree. The car is stopped in 0.250 s. The average force acting on the car during the collision is

(Multiple Choice)

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Question 94

A Saturn V rocket with an initial mass m₀ of 3 $\times$ 10⁶ kg has a payload that accounts for 27% of this mass, a burn rate of 15 $\times$ 10³ kg/s, and a thrust F_th of 35 $\times$ 10⁶ N. The acceleration at burnout is

(Multiple Choice)

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Question 95

In riot control, the riot squad uses a water hose that shoots water at a rate of 5 m/s and volume of 40 L/s. What is the average force exerted on a person assuming that the water splashes sideways in all directions? The density of water is 1000 kg/m³.

(Multiple Choice)

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Question 96

Glider A, traveling at 10 m/s on an air track, collides elastically with glider B traveling at 8.0 m/s in the same direction. The gliders are of equal mass. The final speed of glider B is

(Multiple Choice)

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Question 97

A particle of mass 2m is moving to the right in projectile motion. At the top of its trajectory, an explosion breaks the particle into two equal parts. After the explosion, one part falls straight down with no horizontal motion. What is the direction of the motion of the other part just after the explosion?

(Multiple Choice)

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Question 98

You shoot an arrow with a mass of 0.54 kg at 45º above the horizontal. The bow exerts a force of 125 N for 0.65 s. With no air resistance, the maximum height the arrow reaches is

(Multiple Choice)

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Question 99

Cyrano de Bergerac, in the play by Edmond Rostand, claims to have invented six methods of reaching the moon. Five of these are listed below. Select the one that has a physically sound basis.

(Multiple Choice)

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Question 100

Showing 81 - 100 of 107

Two students, sitting on frictionless carts, push against each other. Both are initially at rest and the mass of student 1 and the cart is M, and that of student 2 and the cart is 1.5M. If student 1 pushes student 2 so that she recoils with velocity , what is the velocity of student 2.

Consider an inelastic collision between balls of mass m₁ and m₂. The velocities before the collision are ₁ and ₂, respectively, and the velocities after the collision are ₁ and ₂, respectively. Which of the following statements concerning this collision is true?

You shoot an arrow with a mass of 0.54 kg from a bow. The bow exerts a force of 125 N for 0.65 s. The speed of the arrow as it leaves the bow is

A helium atom (mass = 4m) moving with speed V collides elastically with a tritium (hydrogen 3 ) atom (mass = 3m) at rest. Calculate the speed of the tritium atom after the collision.

A woman on a spaceship traveling at a velocity ₀ in free space runs forward and then suddenly stops. When she stops, the center of mass of the system (that is, the ship and the woman)

Vectors and are the momentum vectors of two equal masses, m₁ and m₂. A third equal mass, m₃, has a momentum such that when the three masses collide and stick together the combined mass has zero velocity. The vector that best represents the momentum of mass m₃ is

If the momentum of a mass M is doubled, its kinetic energy will be multiplied by a factor of

Two billiard balls are traveling to the right with speeds v₁ = +0.5 m/s and v₂ = +0.3 m/s. If m₁ = 2.5m₂, calculate the velocity of m₁ after it catches up to and impacts m₂. The speed of m₂ after the collision is +0.55 m/s.

A bullet (mass = m) is fired at speed V into a block of mass M (with M>m) which is hanging vertically from a light string of length L. The bullet stops in the block. If the recoiling block + bullet system reaches a height of 2/3L, then the initial speed of the bullet is given by

A golf ball and a Ping-Pong ball are dropped in a vacuum chamber. When they have fallen halfway to the floor, they have the same

Two bodies A and B move toward each other with speeds of 80 cm/s and 20 cm/s, respectively. The mass of A is 140 g and that of B is 60 g. After a head-on, perfectly elastic collision, the speed of B is

A car having a total mass of 2250 kg and traveling at 72.0 km/h smashes into a tree. The car is stopped in 0.250 s. The average force acting on the car during the collision is

A Saturn V rocket with an initial mass m₀ of 3 $\times$ 10⁶ kg has a payload that accounts for 27% of this mass, a burn rate of 15 $\times$ 10³ kg/s, and a thrust F_th of 35 $\times$ 10⁶ N. The acceleration at burnout is

In riot control, the riot squad uses a water hose that shoots water at a rate of 5 m/s and volume of 40 L/s. What is the average force exerted on a person assuming that the water splashes sideways in all directions? The density of water is 1000 kg/m³.

Glider A, traveling at 10 m/s on an air track, collides elastically with glider B traveling at 8.0 m/s in the same direction. The gliders are of equal mass. The final speed of glider B is

You shoot an arrow with a mass of 0.54 kg at 45º above the horizontal. The bow exerts a force of 125 N for 0.65 s. With no air resistance, the maximum height the arrow reaches is

Cyrano de Bergerac, in the play by Edmond Rostand, claims to have invented six methods of reaching the moon. Five of these are listed below. Select the one that has a physically sound basis.

Systems of Measurement

Motion in One Dimension

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

Filters

Exam 8: Systems of Particles and Conservation of Linear Momentum

Two students, sitting on frictionless carts, push against each other. Both are initially at rest and the mass of student 1 and the cart is M, and that of student 2 and the cart is 1.5M. If student 1 pushes student 2 so that she recoils with velocity , what is the velocity of student 2.

Consider an inelastic collision between balls of mass m1 and m2. The velocities before the collision are 1 and 2, respectively, and the velocities after the collision are 1 and 2, respectively. Which of the following statements concerning this collision is true?

You shoot an arrow with a mass of 0.54 kg from a bow. The bow exerts a force of 125 N for 0.65 s. The speed of the arrow as it leaves the bow is

A helium atom (mass = 4m) moving with speed V collides elastically with a tritium (hydrogen 3 ) atom (mass = 3m) at rest. Calculate the speed of the tritium atom after the collision.

A woman on a spaceship traveling at a velocity 0 in free space runs forward and then suddenly stops. When she stops, the center of mass of the system (that is, the ship and the woman)

Vectors and are the momentum vectors of two equal masses, m1 and m2. A third equal mass, m3, has a momentum such that when the three masses collide and stick together the combined mass has zero velocity. The vector that best represents the momentum of mass m3 is

If the momentum of a mass M is doubled, its kinetic energy will be multiplied by a factor of

Two billiard balls are traveling to the right with speeds v1 = +0.5 m/s and v2 = +0.3 m/s. If m1 = 2.5m2, calculate the velocity of m1 after it catches up to and impacts m2. The speed of m2 after the collision is +0.55 m/s.

A bullet (mass = m) is fired at speed V into a block of mass M (with M>m) which is hanging vertically from a light string of length L. The bullet stops in the block. If the recoiling block + bullet system reaches a height of 2/3L, then the initial speed of the bullet is given by

A golf ball and a Ping-Pong ball are dropped in a vacuum chamber. When they have fallen halfway to the floor, they have the same

Two bodies A and B move toward each other with speeds of 80 cm/s and 20 cm/s, respectively. The mass of A is 140 g and that of B is 60 g. After a head-on, perfectly elastic collision, the speed of B is

A car having a total mass of 2250 kg and traveling at 72.0 km/h smashes into a tree. The car is stopped in 0.250 s. The average force acting on the car during the collision is

A Saturn V rocket with an initial mass m0 of 3 ×\times× 106 kg has a payload that accounts for 27% of this mass, a burn rate of 15 ×\times× 103 kg/s, and a thrust Fth of 35 ×\times× 106 N. The acceleration at burnout is

In riot control, the riot squad uses a water hose that shoots water at a rate of 5 m/s and volume of 40 L/s. What is the average force exerted on a person assuming that the water splashes sideways in all directions? The density of water is 1000 kg/m3.

Glider A, traveling at 10 m/s on an air track, collides elastically with glider B traveling at 8.0 m/s in the same direction. The gliders are of equal mass. The final speed of glider B is

You shoot an arrow with a mass of 0.54 kg at 45º above the horizontal. The bow exerts a force of 125 N for 0.65 s. With no air resistance, the maximum height the arrow reaches is

Cyrano de Bergerac, in the play by Edmond Rostand, claims to have invented six methods of reaching the moon. Five of these are listed below. Select the one that has a physically sound basis.

Systems of Measurement

Motion in One Dimension

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

Filters

Consider an inelastic collision between balls of mass m₁ and m₂. The velocities before the collision are ₁ and ₂, respectively, and the velocities after the collision are ₁ and ₂, respectively. Which of the following statements concerning this collision is true?

A woman on a spaceship traveling at a velocity ₀ in free space runs forward and then suddenly stops. When she stops, the center of mass of the system (that is, the ship and the woman)

Vectors and are the momentum vectors of two equal masses, m₁ and m₂. A third equal mass, m₃, has a momentum such that when the three masses collide and stick together the combined mass has zero velocity. The vector that best represents the momentum of mass m₃ is

Two billiard balls are traveling to the right with speeds v₁ = +0.5 m/s and v₂ = +0.3 m/s. If m₁ = 2.5m₂, calculate the velocity of m₁ after it catches up to and impacts m₂. The speed of m₂ after the collision is +0.55 m/s.

A Saturn V rocket with an initial mass m₀ of 3 $\times$ 10⁶ kg has a payload that accounts for 27% of this mass, a burn rate of 15 $\times$ 10³ kg/s, and a thrust F_th of 35 $\times$ 10⁶ N. The acceleration at burnout is

In riot control, the riot squad uses a water hose that shoots water at a rate of 5 m/s and volume of 40 L/s. What is the average force exerted on a person assuming that the water splashes sideways in all directions? The density of water is 1000 kg/m³.