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Questions and Answers
A baseball with a mass of 0.145 kg is thrown horizontally at a speed of 40 m/s. What is the momentum of the baseball?
A baseball with a mass of 0.145 kg is thrown horizontally at a speed of 40 m/s. What is the momentum of the baseball?
- 5.8 kg m/s to the left
- 5.8 kg m/s to the right (correct)
- 58 kg m/s to the right
- 58 kg m/s to the left
A car with a mass of 1000 kg is traveling at a constant speed of 20 m/s. What is the momentum of the car?
A car with a mass of 1000 kg is traveling at a constant speed of 20 m/s. What is the momentum of the car?
- 20,000 kg m/s to the right (correct)
- 50 kg m/s to the left
- 20,000 kg m/s to the left
- 50 kg m/s to the right
A 5 kg object is moving with a velocity of 10 m/s to the right. What is the change in momentum if the object's velocity changes to 5 m/s to the right?
A 5 kg object is moving with a velocity of 10 m/s to the right. What is the change in momentum if the object's velocity changes to 5 m/s to the right?
- 50 kg m/s to the left
- 50 kg m/s to the right
- 25 kg m/s to the right
- 25 kg m/s to the left (correct)
An object with a mass of 2 kg is moving at a speed of 4 m/s. What is the momentum of the object?
An object with a mass of 2 kg is moving at a speed of 4 m/s. What is the momentum of the object?
Two objects with equal mass are moving with different velocities. Which object will have a greater momentum?
Two objects with equal mass are moving with different velocities. Which object will have a greater momentum?
Flashcards
Momentum
Momentum
The product of an object's mass and velocity.
Momentum formula
Momentum formula
p = m * v, where p is momentum, m is mass, and v is velocity.
Units of momentum
Units of momentum
Momentum is measured in kilogram meters per second (kg m/s).
Direction of momentum
Direction of momentum
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Example of momentum calculation
Example of momentum calculation
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Study Notes
Momentum
- Momentum (symbolized by 'p') is the product of an object's mass and its velocity.
- Momentum can be calculated using the formula: p = m * v (where p is momentum, m is mass, and v is velocity).
- The units for momentum are kilogram meters per second (kg m/s).
- The direction of momentum is the same as the direction of the object's velocity.
- Always include the direction of momentum in your answer.
- For example, if an object has a momentum of 5 kg m/s to the right, you would write "5 kg m/s to the right".
Examples
- A car with a mass of 5 kg traveling at 1 m/s to the right has a momentum of 5 kg m/s to the right.
- An object with a mass of 200 kg traveling at 3 m/s has a momentum of 600 kg m/s. This example lacks a direction.
- An object with a mass of 200 kg traveling upwards at 1 m/s has a momentum of 200 kg m/s upwards.
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