Use the scenario below for the next question. You were traveling north at speed vS1U1B1cS1U1B0 in your car of mass mS1U1B1cS1U1B0 = 2000 kg through an intersection when you were struck by a light truck of mass mS1U1B1tS1U1B0 = 4000 kg traveling West. After the collision the two vehicles are stuck together and travel a distance of 20 m in the direction 30S1U1P1$\circ$S1S1P0 N of W. -What is the truck speed in terms of vc?

A) 0.5vc B) 0.75vc C) 0.87vc D) vc E) 1.15vc A) 0.5vc B) 0.75vc C) 0.87vc D) vc E) 1.15vc

A man in a spacecraft that is moving with a velocity V0 in free space runs forward and then stops. The center of mass of the system (that is, the ship and the man)

A) slows while the man is running, then speeds up when he stops. B) slows while the man is running, then resumes its original velocity when he stops. C) moves faster while the man is running, then slows when he stops. D) moves faster while the man is running, then resumes its original velocity when he stops. E) continues all the while at its original velocity. A) slows while the man is running, then speeds up when he stops. B) slows while the man is running, then resumes its original velocity when he stops. C) moves faster while the man is running, then slows when he stops. D) moves faster while the man is running, then resumes its original velocity when he stops. E) continues all the while at its original velocity.

A ball of mass m and velocity 1 collides with and sticks to a ball of mass M and velocity 2. If the pair moves on with velocity , the impulse given the ball of mass m during the collision must have been

A) m( - 1) B) m( + 1) C) (m + M) D) (m + M)( - 2) E) zero A) m( - 1) B) m( + 1) C) (m + M) D) (m + M)( - 2) E) zero

Use the scenario below for the next question. You were traveling north at speed vS1U1B1cS1U1B0 in your car of mass mS1U1B1cS1U1B0 = 2000 kg through an intersection when you were struck by a light truck of mass mS1U1B1tS1U1B0 = 4000 kg traveling West. After the collision the two vehicles are stuck together and travel a distance of 20 m in the direction 30S1U1P1$\circ$S1S1P0 N of W. -If your speed is 72 km/h, what is the work done by friction in bringing the two vehicles to rest after the collision?

A) - 4.0 $\times$ 105 J B) - 5.3 $\times$ 105 J C) - 8.0 $\times$ 105 J D) -1.3 $\times$ 106 J E) - 1.6 $\times$ 106 J A) - 4.0 $\times$ 105 J B) - 5.3 $\times$ 105 J C) - 8.0 $\times$ 105 J D) -1.3 $\times$ 106 J E) - 1.6 $\times$ 106 J

Exam 8: Systems of Particles and Conservation of Linear Momentum

A bullet with a mass of 20 g and a speed of 960 m/s strikes a block of wood of mass 4.5 kg resting on a horizontal surface. The bullet gets embedded in the block. The speed of the block immediately after the collision

(Multiple Choice)

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Question 61

A bullet is fired at 100 m/s horizontally into a 2-kg block suspended by a light string of length 1.2 m. If the block and bullet system swing up by 20 degrees to the vertical, the mass of the bullet is given by:

(Multiple Choice)

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Question 62

The force exerted on a 10-kg mass is given by F = 10 + 2t Where the units are SI. If the mass starts from rest, its velocity after 2 s is

(Multiple Choice)

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Question 63

A 40-kg girl, standing at rest on the ice, gives a 60-kg boy, who is also standing at rest on the ice, a shove. After the shove, the boy is moving backward at 2.0 m/s. Ignore friction. The girl's speed is

(Multiple Choice)

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Question 64

Two balls are dropped from a height of 6 m. Ball A bounces up to a height of 4 m whereas ball B bounces up to 2 m. Which ball experiences the larger impulse during its collision with the floor?

(Multiple Choice)

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Question 65

A boy and girl on ice skates face each other. The girl has a mass of 20 kg and the boy has a mass of 30 kg. The boy pushes the girl backward at a speed of 3.0 m/s. As a result of the push, the speed of the boy is

(Multiple Choice)

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Question 66

Use the scenario below for the next question. You were traveling north at speed v_c in your car of mass m_c = 2000 kg through an intersection when you were struck by a light truck of mass m_t = 4000 kg traveling West. After the collision the two vehicles are stuck together and travel a distance of 20 m in the direction 30^$\circ$ N of W. -What is the truck speed in terms of v_c?

(Multiple Choice)

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Question 67

A man in a spacecraft that is moving with a velocity V₀ in free space runs forward and then stops. The center of mass of the system (that is, the ship and the man)

(Multiple Choice)

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Question 68

A block that has a mass M = 4.25 kg is hanging at rest on a light string. A projectile with a mass m = 250 g moving horizontally strikes M and sticks to it. The block and its projectile swing up and the center of mass rises a distance h = 12.0 cm. The speed of the projectile is approximately

(Multiple Choice)

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Question 69

A particle of unknown mass has a momentum of 73 kg · m/s. At a time 7.3 s later, the momentum of the particle is 38 kg · m/s. What is the magnitude of the force acting on the particle during the interval, assuming the motion is in a straight line?

(Multiple Choice)

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Question 70

The figure shows a ballistic pendulum in three states. The system (considered to be the ball and the pendulum) will move in such a way that

(Multiple Choice)

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Question 71

In an elastic collision of two objects,

(Multiple Choice)

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Question 72

Two identical bodies of mass M move with equal speeds v. The direction of their velocities is illustrated above. The magnitude of the linear momentum of the system is

(Multiple Choice)

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Question 73

A ball of mass m and velocity ₁ collides with and sticks to a ball of mass M and velocity ₂. If the pair moves on with velocity , the impulse given the ball of mass m during the collision must have been

(Multiple Choice)

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Question 74

The SI units of momentum are

(Multiple Choice)

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Question 75

For a system consisting of two particles that undergo an elastic collision,

(Multiple Choice)

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Question 76

In a coordinate system whose center of mass moves with a velocity _c , the total momentum in the center-of-mass coordinate system after collision of the two masses m₁ and m₂ is

(Multiple Choice)

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Question 77

Use the scenario below for the next question. You were traveling north at speed v_c in your car of mass m_c = 2000 kg through an intersection when you were struck by a light truck of mass m_t = 4000 kg traveling West. After the collision the two vehicles are stuck together and travel a distance of 20 m in the direction 30^$\circ$ N of W. -If your speed is 72 km/h, what is the work done by friction in bringing the two vehicles to rest after the collision?

(Multiple Choice)

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Question 78

Calculate the impulse by the force, as shown in the figure below.

(Multiple Choice)

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Question 79

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 burn time t_b is

(Multiple Choice)

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(36)

Question 80

Showing 61 - 80 of 107

A bullet with a mass of 20 g and a speed of 960 m/s strikes a block of wood of mass 4.5 kg resting on a horizontal surface. The bullet gets embedded in the block. The speed of the block immediately after the collision

A bullet is fired at 100 m/s horizontally into a 2-kg block suspended by a light string of length 1.2 m. If the block and bullet system swing up by 20 degrees to the vertical, the mass of the bullet is given by:

The force exerted on a 10-kg mass is given by F = 10 + 2t Where the units are SI. If the mass starts from rest, its velocity after 2 s is

A 40-kg girl, standing at rest on the ice, gives a 60-kg boy, who is also standing at rest on the ice, a shove. After the shove, the boy is moving backward at 2.0 m/s. Ignore friction. The girl's speed is

Two balls are dropped from a height of 6 m. Ball A bounces up to a height of 4 m whereas ball B bounces up to 2 m. Which ball experiences the larger impulse during its collision with the floor?

A boy and girl on ice skates face each other. The girl has a mass of 20 kg and the boy has a mass of 30 kg. The boy pushes the girl backward at a speed of 3.0 m/s. As a result of the push, the speed of the boy is

A man in a spacecraft that is moving with a velocity V₀ in free space runs forward and then stops. The center of mass of the system (that is, the ship and the man)

A block that has a mass M = 4.25 kg is hanging at rest on a light string. A projectile with a mass m = 250 g moving horizontally strikes M and sticks to it. The block and its projectile swing up and the center of mass rises a distance h = 12.0 cm. The speed of the projectile is approximately

A particle of unknown mass has a momentum of 73 kg · m/s. At a time 7.3 s later, the momentum of the particle is 38 kg · m/s. What is the magnitude of the force acting on the particle during the interval, assuming the motion is in a straight line?

The figure shows a ballistic pendulum in three states. The system (considered to be the ball and the pendulum) will move in such a way that

In an elastic collision of two objects,

Two identical bodies of mass M move with equal speeds v. The direction of their velocities is illustrated above. The magnitude of the linear momentum of the system is

A ball of mass m and velocity ₁ collides with and sticks to a ball of mass M and velocity ₂. If the pair moves on with velocity , the impulse given the ball of mass m during the collision must have been

The SI units of momentum are

For a system consisting of two particles that undergo an elastic collision,

In a coordinate system whose center of mass moves with a velocity _c , the total momentum in the center-of-mass coordinate system after collision of the two masses m₁ and m₂ is

Calculate the impulse by the force, as shown in the figure below.

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 burn time t_b is

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Exam 8: Systems of Particles and Conservation of Linear Momentum

A bullet with a mass of 20 g and a speed of 960 m/s strikes a block of wood of mass 4.5 kg resting on a horizontal surface. The bullet gets embedded in the block. The speed of the block immediately after the collision

A bullet is fired at 100 m/s horizontally into a 2-kg block suspended by a light string of length 1.2 m. If the block and bullet system swing up by 20 degrees to the vertical, the mass of the bullet is given by:

The force exerted on a 10-kg mass is given by F = 10 + 2t Where the units are SI. If the mass starts from rest, its velocity after 2 s is

A 40-kg girl, standing at rest on the ice, gives a 60-kg boy, who is also standing at rest on the ice, a shove. After the shove, the boy is moving backward at 2.0 m/s. Ignore friction. The girl's speed is

Two balls are dropped from a height of 6 m. Ball A bounces up to a height of 4 m whereas ball B bounces up to 2 m. Which ball experiences the larger impulse during its collision with the floor?

A boy and girl on ice skates face each other. The girl has a mass of 20 kg and the boy has a mass of 30 kg. The boy pushes the girl backward at a speed of 3.0 m/s. As a result of the push, the speed of the boy is

A man in a spacecraft that is moving with a velocity V0 in free space runs forward and then stops. The center of mass of the system (that is, the ship and the man)

A block that has a mass M = 4.25 kg is hanging at rest on a light string. A projectile with a mass m = 250 g moving horizontally strikes M and sticks to it. The block and its projectile swing up and the center of mass rises a distance h = 12.0 cm. The speed of the projectile is approximately

A particle of unknown mass has a momentum of 73 kg · m/s. At a time 7.3 s later, the momentum of the particle is 38 kg · m/s. What is the magnitude of the force acting on the particle during the interval, assuming the motion is in a straight line?

The figure shows a ballistic pendulum in three states. The system (considered to be the ball and the pendulum) will move in such a way that

In an elastic collision of two objects,

Two identical bodies of mass M move with equal speeds v. The direction of their velocities is illustrated above. The magnitude of the linear momentum of the system is

A ball of mass m and velocity 1 collides with and sticks to a ball of mass M and velocity 2. If the pair moves on with velocity , the impulse given the ball of mass m during the collision must have been

The SI units of momentum are

For a system consisting of two particles that undergo an elastic collision,

In a coordinate system whose center of mass moves with a velocity c , the total momentum in the center-of-mass coordinate system after collision of the two masses m1 and m2 is

Calculate the impulse by the force, as shown in the figure below.

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 burn time tb is

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

A man in a spacecraft that is moving with a velocity V₀ in free space runs forward and then stops. The center of mass of the system (that is, the ship and the man)

A ball of mass m and velocity ₁ collides with and sticks to a ball of mass M and velocity ₂. If the pair moves on with velocity , the impulse given the ball of mass m during the collision must have been

In a coordinate system whose center of mass moves with a velocity _c , the total momentum in the center-of-mass coordinate system after collision of the two masses m₁ and m₂ 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 burn time t_b is