Podcast
Questions and Answers
Which of the following is not one of the laws of motion?
Which of the following is not one of the laws of motion?
- For every action, there is an equal and opposite reaction
- The force acting on an object is equal to the mass of the object times its acceleration
- An object at rest stays at rest unless acted upon by an unbalanced force
- The force of gravity is directly proportional to the mass of an object (correct)
What can be said about an object with a constant velocity?
What can be said about an object with a constant velocity?
- It experiences a net force of zero (correct)
- It must be accelerating
- Its acceleration is equal to its velocity
- It has no mass
What happens to the momentum of an object when it experiences an unbalanced external force?
What happens to the momentum of an object when it experiences an unbalanced external force?
- The momentum decreases (correct)
- The momentum becomes negative
- The momentum remains constant
- The momentum increases
Which of the following is a common misconception about inertia?
Which of the following is a common misconception about inertia?
Flashcards
Newton's Laws of Motion
Newton's Laws of Motion
A set of three physical laws that describe the relationship between an object's motion and the forces acting upon it.
Constant Velocity
Constant Velocity
An object moving at a steady speed in a straight line.
Unbalanced Force
Unbalanced Force
When the forces acting on an object are not equal and opposite, causing a change in the object's motion.
Inertia
Inertia
Signup and view all the flashcards
Study Notes
Laws of Motion
- Laws of Motion were formulated by Sir Isaac Newton, comprising three key principles governing the movement of objects.
- Among these:
- Newton's First Law (Inertia)
- Newton's Second Law (Force and Acceleration)
- Newton's Third Law (Action and Reaction)
- A statement that does not belong to these laws may involve a concept unrelated to motion dynamics.
Constant Velocity
- An object with constant velocity maintains both speed and direction over time.
- It implies no net external force acting on the object, adhering to Newton's First Law.
- Conversely, this also means the object's acceleration is zero.
Momentum and Unbalanced Forces
- Momentum is defined as the product of an object's mass and velocity.
- When an unbalanced external force acts on an object, its momentum changes.
- This change is governed by Newton’s Second Law, where force equals the change in momentum over time.
Misconceptions about Inertia
- Common misconception: Inertia is often mistakenly thought to be a force acting on an object.
- Inertia is actually the property of matter that resists changes to its state of motion, directly relating to an object's mass.
- It is not responsible for motion but describes the tendency of an object to remain in its current state (rest or motion) unless acted upon by an external force.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
