A cart of weight 25 N is accelerated across a level surface at 0.15 m/s2.What net force acts on the wagon? (g = 9.8 m/s2)

A) 36.75 N B) 0.38 N C) 3.8 N D) 17.01 N E) 166.7 N A) 36.75 N B) 0.38 N C) 3.8 N D) 17.01 N E) 166.7 N

Exam 4: The Laws of Motion

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The coefficient of friction between a racecar's wheels and the track is 1.0.The car starts from rest and accelerates at a constant rate for 700 m.Find the maximum speed at the end of the race.

(Multiple Choice)

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Question 81

A man pulls a sled at a constant velocity across a horizontal snow surface.If a force of 85 N is being applied to the sled rope at an angle of 50° to the ground,what is the force of friction between sled and snow?

(Multiple Choice)

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Question 82

The net force on an object is in the positive x-direction.Consider the following statements. (I. The object can be moving in the negative x-direction. (II. The object can be speeding up. (III) The object can be slowing down. (IV. The object can be moving in the positive y-direction. Which of the statements are true?

(Multiple Choice)

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Question 83

A block is launched up an incline plane.After going up the plane,it slides back down to its starting position.The coefficient of friction between the block and the plane is 0.3.The speed of the block when it reaches the starting position on the trip down:

(Multiple Choice)

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Question 84

The acceleration due to gravity on the Moon's surface is one-sixth that on Earth.What net force would be required to accelerate a 15-kg object at 8.0 m/s² on the moon?

(Multiple Choice)

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Question 85

A worker pulls a 350-N packing crate at constant velocity across a rough floor by exerting a force F = 200.0 N at an angle of 30.0° above the horizontal.What is the coefficient of kinetic friction of the floor?

(Multiple Choice)

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Question 86

An elevator weighing 19,000 N is supported by a steel cable.What is the tension in the cable when the elevator is being accelerated upward at a rate of 3.00 m/s²? (g = 9.80 m/s²)

(Multiple Choice)

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Question 87

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 force is applied to the left side of the left cube causing all three cubes to accelerate to the right at 4.0 m/s².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 88

A cart of weight 25 N is accelerated across a level surface at 0.15 m/s².What net force acts on the wagon? (g = 9.8 m/s²)

(Multiple Choice)

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Question 89

A 17-kg mass is placed on a 28° incline and friction keeps it from sliding.The coefficient of static friction in this case is 0.565 and the coefficient of sliding friction is 0.515.The mass is given a shove causing it to slide down the incline.Taking down the incline as positive,what is the acceleration of the mass while it is sliding?

(Multiple Choice)

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Question 90

A shot-putter moves his arm and the 6.0-kg shot through a distance of 2.5 m,giving the shot a velocity of 8 m/s from rest.Find the average force exerted on the shot during this time.

(Multiple Choice)

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Question 91

As a car moves forward on a level road at constant velocity,the net force acting on the tires is:

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Question 92

Find the tension in an elevator cable if the 2,000-kg elevator is descending with an acceleration of 1.8 m/s²,downward.

(Multiple Choice)

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Question 93

Showing 81 - 93 of 93

Exam 4: The Laws of Motion

The coefficient of friction between a racecar's wheels and the track is 1.0.The car starts from rest and accelerates at a constant rate for 700 m.Find the maximum speed at the end of the race.

A man pulls a sled at a constant velocity across a horizontal snow surface.If a force of 85 N is being applied to the sled rope at an angle of 50° to the ground,what is the force of friction between sled and snow?

A block is launched up an incline plane.After going up the plane,it slides back down to its starting position.The coefficient of friction between the block and the plane is 0.3.The speed of the block when it reaches the starting position on the trip down:

The acceleration due to gravity on the Moon's surface is one-sixth that on Earth.What net force would be required to accelerate a 15-kg object at 8.0 m/s2 on the moon?

A worker pulls a 350-N packing crate at constant velocity across a rough floor by exerting a force F = 200.0 N at an angle of 30.0° above the horizontal.What is the coefficient of kinetic friction of the floor?

An elevator weighing 19,000 N is supported by a steel cable.What is the tension in the cable when the elevator is being accelerated upward at a rate of 3.00 m/s2? (g = 9.80 m/s2)

A cart of weight 25 N is accelerated across a level surface at 0.15 m/s2.What net force acts on the wagon? (g = 9.8 m/s2)

A shot-putter moves his arm and the 6.0-kg shot through a distance of 2.5 m,giving the shot a velocity of 8 m/s from rest.Find the average force exerted on the shot during this time.

As a car moves forward on a level road at constant velocity,the net force acting on the tires is:

Find the tension in an elevator cable if the 2,000-kg elevator is descending with an acceleration of 1.8 m/s2,downward.

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

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The acceleration due to gravity on the Moon's surface is one-sixth that on Earth.What net force would be required to accelerate a 15-kg object at 8.0 m/s² on the moon?

An elevator weighing 19,000 N is supported by a steel cable.What is the tension in the cable when the elevator is being accelerated upward at a rate of 3.00 m/s²? (g = 9.80 m/s²)

A cart of weight 25 N is accelerated across a level surface at 0.15 m/s².What net force acts on the wagon? (g = 9.8 m/s²)

Find the tension in an elevator cable if the 2,000-kg elevator is descending with an acceleration of 1.8 m/s²,downward.