Exploring Newton's First Law and Gravity

What is another name for Newton's First Law of Motion?

• Law of Universal Gravitation

• Law of Action and Reaction

• Law of Inertia

• Law of Acceleration

If an object is at rest, what can we say about its velocity and acceleration?

• Velocity is non-zero, acceleration is non-zero

• Velocity is zero, acceleration is zero

• Velocity is zero, acceleration is non-zero

• Velocity is non-zero, acceleration is zero

In the sample problem, what is the force of gravity acting on the object?

• 12 Newtons

• 8 Newtons

• 20 Newtons

• 0 Newtons

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How do you calculate the mass of an object using the force of gravity and acceleration due to gravity?

• Mass = Force of gravity + Acceleration due to gravity

• Mass = Force of gravity * Acceleration due to gravity

• Mass = Force of gravity / Acceleration due to gravity

• Mass = Acceleration due to gravity / Force of gravity

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What is the unit of force in the International System of Units (SI)?

• Joule

• Newton

• Meter per second squared

• Kilogram

In the second problem, what is the constant speed of the object?

• 28 m/s

• 22 m/s

• 9.81 m/s

• 3.0 m/s

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What is the normal force acting on the object in the second problem?

• 0 Newtons

• 15 Newtons

• 22 Newtons

• 28 Newtons

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In the elevator problem, what is the mass of the elevator cab?

• 9.81 kilograms

• 1,268 kilograms

• 1,200 kilograms

• 68 kilograms

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What is the acceleration due to gravity used in the calculations?

• 3.2 m/s^2

• 28 m/s^2

• 22 m/s^2

• 9.81 m/s^2

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What is the tension in the cable holding up the elevator?

• 1,200 Newtons

• 12,440 Newtons

• 68 Newtons

• 9.81 Newtons

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