The following four forces act on a 4.00 kg object: F1 = 300 N east F2 = 700 N north F3 = 500 N west F4 = 600 N south What is the acceleration of the object?

A) 224 N in a direction 63.4° north of west B) 300 N in a direction 63.4° north of west C) 300 N in a direction 26.6° north of west D) 224 N in a direction 26.6° north of west E) 2100 N in a direction 26.6° north of west A) 224 N in a direction 63.4° north of west B) 300 N in a direction 63.4° north of west C) 300 N in a direction 26.6° north of west D) 224 N in a direction 26.6° north of west E) 2100 N in a direction 26.6° north of west

Exam 5: Newtons Laws of Motion

An ant walks down the surface of a ball. If the ant begins to slip when the normal force is less than one-third of the tangential component of the ant's weight, at what angle, measured from the top of the ball, does the ant begin to slip?

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Question 21

An object rests on an inclined surface. If the inclination of the surface is made steeper, what does the normal force on the object do?

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Question 22

A truck is towing a car whose mass is one quarter that of the truck. The force exerted by the truck on the car is 6000 N. The force exerted by the car on the truck is

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Question 23

An astronaut in a space capsule is experiencing "weightlessness." Does the astronaut have to exert any effort to throw a bowling ball, since the bowling ball is also weightless?

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Question 24

You ride on an elevator that is moving with constant downward acceleration while standing on a bathroom scale. The reading on the scale is

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Question 25

State Newton's second law of motion.

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Question 26

In a particle accelerator, a proton reaches an acceleration of 9.0 × 10¹³ m/s². The mass of a proton is 1.7 × 10^-27 kg. What is the force on the proton?

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Question 27

A locomotive is pulling three wagons along a level track with a force of 100,000 N. The wagon next to the locomotive has a mass of 80,000 kg, the next one, 50,000 kg, and the last one, 70,000 kg. Neglect friction. What is the force between the 80,000-kg and 50,000-kg wagons?

(Multiple Choice)

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Question 28

An object is moving with constant velocity. Which of the following statements is true?

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Question 29

On a hard stop, the deceleration of a car is 8.00 m/s². What force does a 50.0-kg passenger exert on the seat belt in such a stop?

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Question 30

An object is being acted upon by three forces and moves with a constant velocity. One force is 60.0 N along the x-axis, the second is 75.0 N along a direction making a counterclockwise angle of 150.0° with the x-axis. What is the magnitude of the third force?

(Multiple Choice)

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Question 31

When a hunter fires a rifle, the hunter feels a force against her shoulder. Explain why.

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Question 32

A 45-kg person steps on a scale in an elevator. The scale reads 460 N. What is the elevator doing?

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Question 33

A 1000-kg barge is being towed by means of two horizontal cables. One cable is pulling with a force of 80.0 N in a direction 30.0° west of north. In what direction should the second cable pull so that the barge will accelerate northward, if the force exerted by the cable is 120 N?

(Multiple Choice)

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Question 34

A flatbed truck is carrying a load of timber which is not tied down. The mass of the timber is 800 kg. The maximum frictional force between the truck bed and the load is 2400 N. What is the highest acceleration that the truck can have without losing its load?

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Question 35

A 60.0-kg person rides in elevator while standing on a scale. The elevator has an acceleration 2.00 m/s² upward. What is the reading on the scale?

(Multiple Choice)

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Question 36

A net force of 450 N applied to a car results in the car accelerating at 0.360 m/s². What is the mass of the car?

(Multiple Choice)

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Question 37

State Newton's first law of motion.

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Question 38

A 40.0-kg suitcase is being pulled along the ground by means of a strap which exerts a force of 10.0 N at an angle of 43.0° above the horizontal. What is the normal force exerted by the ground?

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Question 39

The following four forces act on a 4.00 kg object: F₁ = 300 N east F₂ = 700 N north F₃ = 500 N west F₄ = 600 N south What is the acceleration of the object?

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Question 40

Showing 21 - 40 of 101

Exam 5: Newtons Laws of Motion

An ant walks down the surface of a ball. If the ant begins to slip when the normal force is less than one-third of the tangential component of the ant's weight, at what angle, measured from the top of the ball, does the ant begin to slip?

An object rests on an inclined surface. If the inclination of the surface is made steeper, what does the normal force on the object do?

A truck is towing a car whose mass is one quarter that of the truck. The force exerted by the truck on the car is 6000 N. The force exerted by the car on the truck is

An astronaut in a space capsule is experiencing "weightlessness." Does the astronaut have to exert any effort to throw a bowling ball, since the bowling ball is also weightless?

You ride on an elevator that is moving with constant downward acceleration while standing on a bathroom scale. The reading on the scale is

State Newton's second law of motion.

In a particle accelerator, a proton reaches an acceleration of 9.0 × 1013 m/s2. The mass of a proton is 1.7 × 10-27 kg. What is the force on the proton?

A locomotive is pulling three wagons along a level track with a force of 100,000 N. The wagon next to the locomotive has a mass of 80,000 kg, the next one, 50,000 kg, and the last one, 70,000 kg. Neglect friction. What is the force between the 80,000-kg and 50,000-kg wagons?

An object is moving with constant velocity. Which of the following statements is true?

On a hard stop, the deceleration of a car is 8.00 m/s2. What force does a 50.0-kg passenger exert on the seat belt in such a stop?

An object is being acted upon by three forces and moves with a constant velocity. One force is 60.0 N along the x-axis, the second is 75.0 N along a direction making a counterclockwise angle of 150.0° with the x-axis. What is the magnitude of the third force?

When a hunter fires a rifle, the hunter feels a force against her shoulder. Explain why.

A 45-kg person steps on a scale in an elevator. The scale reads 460 N. What is the elevator doing?

A 1000-kg barge is being towed by means of two horizontal cables. One cable is pulling with a force of 80.0 N in a direction 30.0° west of north. In what direction should the second cable pull so that the barge will accelerate northward, if the force exerted by the cable is 120 N?

A flatbed truck is carrying a load of timber which is not tied down. The mass of the timber is 800 kg. The maximum frictional force between the truck bed and the load is 2400 N. What is the highest acceleration that the truck can have without losing its load?

A 60.0-kg person rides in elevator while standing on a scale. The elevator has an acceleration 2.00 m/s2 upward. What is the reading on the scale?

A net force of 450 N applied to a car results in the car accelerating at 0.360 m/s2. What is the mass of the car?

State Newton's first law of motion.

A 40.0-kg suitcase is being pulled along the ground by means of a strap which exerts a force of 10.0 N at an angle of 43.0° above the horizontal. What is the normal force exerted by the ground?

The following four forces act on a 4.00 kg object: F1 = 300 N east F2 = 700 N north F3 = 500 N west F4 = 600 N south What is the acceleration of the object?

Introduction to Physics

One-Dimensional Kinematics

Vectors in Physics

Two-Dimensional Kinematics

Applications of Newtons Laws

Work and Kinetic Energy

Potential Energy and Conservation of Energy

Linear Momentum and Collisions

Rotational Kinematics and Energy

Rotational Dynamics and Static Equilibrium

Gravity

Oscillations About Equilibrium

Waves and Sound

Fluids

Temperature and Heat

Phases and Phase Changes

The Laws of Thermodynamics

Electric Charges, Forces, and Fields

Electric Potential and Electric Potential Energy

Electric Current and Direct-Current Circuits

Magnetism

Magnetic Flux and Faradays Law of Induction

Alternating-Current Circuits

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Physical Optics: Interference and Diffraction

Relativity

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In a particle accelerator, a proton reaches an acceleration of 9.0 × 10¹³ m/s². The mass of a proton is 1.7 × 10^-27 kg. What is the force on the proton?

On a hard stop, the deceleration of a car is 8.00 m/s². What force does a 50.0-kg passenger exert on the seat belt in such a stop?

A 60.0-kg person rides in elevator while standing on a scale. The elevator has an acceleration 2.00 m/s² upward. What is the reading on the scale?

A net force of 450 N applied to a car results in the car accelerating at 0.360 m/s². What is the mass of the car?

The following four forces act on a 4.00 kg object: F₁ = 300 N east F₂ = 700 N north F₃ = 500 N west F₄ = 600 N south What is the acceleration of the object?