An airplane of mass 1.8 × 104 kg tows a glider of mass 0.6 × 104 kg.The airplane propellers provide a net forward thrust of 9.60 × 104 N.What is the glider's acceleration?

A) 4.0 m/s2 B) 5.0 m/s2 C) 8.0 m/s2 D) 16.0 m/s2 E) 9.8 m/s2 A) 4.0 m/s2 B) 5.0 m/s2 C) 8.0 m/s2 D) 16.0 m/s2 E) 9.8 m/s2

A 9-kg mass and a 2-kg mass are connected by a light string over a massless,frictionless pulley.If g = 9.8 m/s2,what is the acceleration of the system when released?

A) 15.4 m/s2 B) 6.2 m/s2 C) 107.8 m/s2 D) 9.8 m/s2 E) 1.1 m/s2 A) 15.4 m/s2 B) 6.2 m/s2 C) 107.8 m/s2 D) 9.8 m/s2 E) 1.1 m/s2

Exam 4: The Laws of Motion

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Five boxes,each having weight 150 N,are stacked up.The bottom box is the fifth from the top.What is the magnitude of the normal force upward exerted by the fourth box from the top on the third box from the top?

(Multiple Choice)

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Question 41

Three identical 6.0-kg cubes are placed on a horizontal frictionless surface in contact with one another.The cubes are lined up from left to right and a 36-N force is applied to the left side of the left cube causing all three cubes to accelerate to the right.If the cubes are each subject to a frictional force of 6.0 N,what is the magnitude of the force exerted on the right cube by the middle cube in this case?

(Multiple Choice)

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Question 42

Hector drives a pickup truck horizontally at 10.0 m/s.He is transporting a crate of delicate lead crystal.If the coefficient of static friction between the crate and the truck bed is 0.700,what is the minimum stopping distance for the truck so the crate will not slide?

(Multiple Choice)

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Question 43

Rita accelerates a 0.45-kg ball from rest to 8.0 m/s during the 0.15 s in which her foot is in contact with the ball.What average force does she apply to the ball during the kick?

(Multiple Choice)

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Question 44

The accelerating force of the wind on a small 150-kg sailboat is 756 N northeast.If the drag of the keel is 535 N acting west,what is the acceleration of the boat?

(Multiple Choice)

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Question 45

A trapeze artist,with swing,weighs 800 N;he is being held to one side by his partner so that the swing ropes make an angle of 45.0° with the vertical.In such a condition of static equilibrium,what is the tension in the rope?

(Multiple Choice)

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Question 46

The maximum possible value for the coefficient of static friction is:

(Multiple Choice)

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Question 47

A crate of weight W is being pushed across a horizontal surface by a force directed at an angle of 20° below the horizontal.What is the magnitude of the normal force on the crate?

(Multiple Choice)

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Question 48

An airplane of mass 1.8 × 10⁴ kg tows a glider of mass 0.6 × 10⁴ kg.The airplane propellers provide a net forward thrust of 9.60 × 10⁴ N.What is the glider's acceleration?

(Multiple Choice)

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Question 49

As a car goes up a hill,there is a force of friction between the road and the tires rolling on the road.The maximum force of friction is equal to:

(Multiple Choice)

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Question 50

Jamal pulls a 250-N sled up a 25.0° slope at constant speed by a force of 200 N.Near the top of the hill he releases the sled.With what acceleration does the sled go down the hill?

(Multiple Choice)

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Question 51

A 300-N sled is pulled up a 27° slope at a constant speed by a force of 250 N.What is the coefficient of kinetic friction between sled and slope?

(Multiple Choice)

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Question 52

Dana uses a rope to pull a box that weighs 300 N across a level surface with constant velocity.The rope makes an angle of 25° above the horizontal and the tension in the rope is 100 N.What is the coefficient of friction?

(Multiple Choice)

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Question 53

A horizontal force of 950 N is needed to overcome the force of static friction between a level floor and a 150-kg crate.If g = 9.8 m/s²,what is the coefficient of static friction?

(Multiple Choice)

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Question 54

In the terminology a 500-N block,the 500-N refers to the block's:

(Multiple Choice)

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Question 55

A girl is using a rope to pull a box that weighs 350 N across a level surface with constant velocity.The rope makes an angle of 30° above the horizontal,and the tension in the rope is 100 N.What is the normal force of the floor on the box?

(Multiple Choice)

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Question 56

An object of mass m is on the surface of the Earth.The distance to the Sun and the Moon are d_S and d_M,and the masses of the Sun and Moon are M_S and M_M.What is the ratio of the gravitational force from the Sun to that of the Moon on the object?

(Multiple Choice)

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Question 57

As a car skids with its wheels locked trying to stop on a road covered with ice and snow,the force of friction between the icy road and the tires will usually be:

(Multiple Choice)

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Question 58

An Olympic skier moving at 15.0 m/s down a 25.0° slope encounters a region of wet snow,of coefficient of friction μ_k = 0.740.How far down the slope does she go before stopping?

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Question 59

A 9-kg mass and a 2-kg mass are connected by a light string over a massless,frictionless pulley.If g = 9.8 m/s²,what is the acceleration of the system when released?

(Multiple Choice)

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Question 60

Showing 41 - 60 of 93

Exam 4: The Laws of Motion

Five boxes,each having weight 150 N,are stacked up.The bottom box is the fifth from the top.What is the magnitude of the normal force upward exerted by the fourth box from the top on the third box from the top?

Hector drives a pickup truck horizontally at 10.0 m/s.He is transporting a crate of delicate lead crystal.If the coefficient of static friction between the crate and the truck bed is 0.700,what is the minimum stopping distance for the truck so the crate will not slide?

Rita accelerates a 0.45-kg ball from rest to 8.0 m/s during the 0.15 s in which her foot is in contact with the ball.What average force does she apply to the ball during the kick?

The accelerating force of the wind on a small 150-kg sailboat is 756 N northeast.If the drag of the keel is 535 N acting west,what is the acceleration of the boat?

A trapeze artist,with swing,weighs 800 N;he is being held to one side by his partner so that the swing ropes make an angle of 45.0° with the vertical.In such a condition of static equilibrium,what is the tension in the rope?

The maximum possible value for the coefficient of static friction is:

A crate of weight W is being pushed across a horizontal surface by a force directed at an angle of 20° below the horizontal.What is the magnitude of the normal force on the crate?

An airplane of mass 1.8 × 104 kg tows a glider of mass 0.6 × 104 kg.The airplane propellers provide a net forward thrust of 9.60 × 104 N.What is the glider's acceleration?

As a car goes up a hill,there is a force of friction between the road and the tires rolling on the road.The maximum force of friction is equal to:

Jamal pulls a 250-N sled up a 25.0° slope at constant speed by a force of 200 N.Near the top of the hill he releases the sled.With what acceleration does the sled go down the hill?

A 300-N sled is pulled up a 27° slope at a constant speed by a force of 250 N.What is the coefficient of kinetic friction between sled and slope?

Dana uses a rope to pull a box that weighs 300 N across a level surface with constant velocity.The rope makes an angle of 25° above the horizontal and the tension in the rope is 100 N.What is the coefficient of friction?

A horizontal force of 950 N is needed to overcome the force of static friction between a level floor and a 150-kg crate.If g = 9.8 m/s2,what is the coefficient of static friction?

In the terminology a 500-N block,the 500-N refers to the block's:

A girl is using a rope to pull a box that weighs 350 N across a level surface with constant velocity.The rope makes an angle of 30° above the horizontal,and the tension in the rope is 100 N.What is the normal force of the floor on the box?

An object of mass m is on the surface of the Earth.The distance to the Sun and the Moon are dS and dM,and the masses of the Sun and Moon are MS and MM.What is the ratio of the gravitational force from the Sun to that of the Moon on the object? ​

As a car skids with its wheels locked trying to stop on a road covered with ice and snow,the force of friction between the icy road and the tires will usually be:

An Olympic skier moving at 15.0 m/s down a 25.0° slope encounters a region of wet snow,of coefficient of friction μk = 0.740.How far down the slope does she go before stopping?

A 9-kg mass and a 2-kg mass are connected by a light string over a massless,frictionless pulley.If g = 9.8 m/s2,what is the acceleration of the system when released?

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses

Mirrors and Lenses: Part A

Wave Optics

Wave Optics: Part A

Optical Instruments

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles

Nuclear Energy and Elementary Particles: Part A

Particle Collisions, Mediating Photons, and Quark Structures: Exploring the Fundamentals of Physics

An airplane of mass 1.8 × 10⁴ kg tows a glider of mass 0.6 × 10⁴ kg.The airplane propellers provide a net forward thrust of 9.60 × 10⁴ N.What is the glider's acceleration?

A horizontal force of 950 N is needed to overcome the force of static friction between a level floor and a 150-kg crate.If g = 9.8 m/s²,what is the coefficient of static friction?

An object of mass m is on the surface of the Earth.The distance to the Sun and the Moon are d_S and d_M,and the masses of the Sun and Moon are M_S and M_M.What is the ratio of the gravitational force from the Sun to that of the Moon on the object?

An Olympic skier moving at 15.0 m/s down a 25.0° slope encounters a region of wet snow,of coefficient of friction μ_k = 0.740.How far down the slope does she go before stopping?

A 9-kg mass and a 2-kg mass are connected by a light string over a massless,frictionless pulley.If g = 9.8 m/s²,what is the acceleration of the system when released?