A single constant 10-pound force F1 acts on a body, causing it to accelerate. Then, while F1 continues to act, a second constant force F2 is applied to the body, which comes to a momentary stop. The magnitude of F2 is

A) zero. B) a bit less than 10 pounds. C) exactly 10 pounds. D) larger than 10 pounds. E) There is not enough information to tell. A) zero. B) a bit less than 10 pounds. C) exactly 10 pounds. D) larger than 10 pounds. E) There is not enough information to tell.

An elevator of mass 500 kg is caused to accelerate upward at 3.0 m/s2 by a force in the cable. What is the force exerted by the cable?

A) 1,500 N B) 4,900 N C) 6,400 N D) 2,900 N E) zero A) 1,500 N B) 4,900 N C) 6,400 N D) 2,900 N E) zero

Exam 4: Newtons Laws: Explaining Motion

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The acceleration due to gravity is smaller on Mars than the Earth, so the Mars rovers that explore the surface are lighter on Mars than they are on Earth. If the rovers roll across a flat plain, then the force required to accelerate the rovers is

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Question 41

When an object is at rest, it might have several forces acting on it. However,

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Question 42

Your mass is 50 kg. Suppose you are standing on a scale in an elevator that is approaching a top floor and decreasing its speed at the rate of 3 m/s every second. What would be the reading on the scale?

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Question 43

A 10.0 kg block on a smooth horizontal surface is acted upon by two forces: a horizontal force of 70 N acting to the left and a horizontal force of 30 N to the right. The acceleration of the block will be

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Question 44

A dog weighs 200 N. What is his approximate weight in pounds (lb)? (1 lb = 4.45 N)

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Question 45

A single constant 10-pound force F₁ acts on a body, causing it to accelerate. Then, while F₁ continues to act, a second constant force F₂ is applied to the body, which comes to a momentary stop. The magnitude of F₂ is

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Question 46

When a net horizontal force of 250 N acts on a 50-kg cart that is free to roll on a level surface,

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Question 47

The frictional force, due to air resistance, acting on an object is always

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Question 48

An elevator of mass 500 kg is caused to accelerate upward at 3.0 m/s² by a force in the cable. What is the force exerted by the cable?

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Question 49

A common experience is to find that a steady pull is required to keep an object moving, even on a level surface, when friction is present. Analyzing this experience in light of the laws of motion, the accepted conclusion is that

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Question 50

The amount of inertia a body has can be measured by finding its ___________.

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Question 51

Your mass is 50 kg. Suppose you are standing on a scale in an elevator that starts moving up and increases its speed at the rate of 3 m/s every second. What would be the reading on the scale?

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Question 52

Showing 41 - 52 of 52

The acceleration due to gravity is smaller on Mars than the Earth, so the Mars rovers that explore the surface are lighter on Mars than they are on Earth. If the rovers roll across a flat plain, then the force required to accelerate the rovers is

When an object is at rest, it might have several forces acting on it. However,

Your mass is 50 kg. Suppose you are standing on a scale in an elevator that is approaching a top floor and decreasing its speed at the rate of 3 m/s every second. What would be the reading on the scale?

A 10.0 kg block on a smooth horizontal surface is acted upon by two forces: a horizontal force of 70 N acting to the left and a horizontal force of 30 N to the right. The acceleration of the block will be

A dog weighs 200 N. What is his approximate weight in pounds (lb)? (1 lb = 4.45 N)

A single constant 10-pound force F₁ acts on a body, causing it to accelerate. Then, while F₁ continues to act, a second constant force F₂ is applied to the body, which comes to a momentary stop. The magnitude of F₂ is

When a net horizontal force of 250 N acts on a 50-kg cart that is free to roll on a level surface,

The frictional force, due to air resistance, acting on an object is always

An elevator of mass 500 kg is caused to accelerate upward at 3.0 m/s² by a force in the cable. What is the force exerted by the cable?

A common experience is to find that a steady pull is required to keep an object moving, even on a level surface, when friction is present. Analyzing this experience in light of the laws of motion, the accepted conclusion is that

The amount of inertia a body has can be measured by finding its ___________.

Your mass is 50 kg. Suppose you are standing on a scale in an elevator that starts moving up and increases its speed at the rate of 3 m/s every second. What would be the reading on the scale?

Physics, the Fundamental Science

Describing Motion

Falling Objects and Projectile Motion

Circular Motion, the Planets, and Gravity

Energy and Oscillations

Momentum and Impulse

Rotational Motion of Solid Objects

The Behavior of Fluids

Temperature and Heat

Heat Engines and the Second Law of Thermodynamics

Electrostatic Phenomena

Electric Circuits

Magnets and Electromagnetism

Making Waves

Light Waves and Color

Light and Image Formation

The Structure of the Atom

The Nucleus and Nuclear Energy

Relativity

Beyond Everyday Phenomena

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