Newton first and second law

• What are the two laws of motion discussed in the video?

  Newton's first and second laws of motion
• What does Newton's first law state about resultant force?

  A resultant force is required to change the motion of an object
• What happens to a stationary object if there is no resultant force acting on it?

  The object will remain stationary
• What happens to a moving object if the resultant force is zero?

  The object will continue moving at the same velocity
• What does Newton's second law state about non-zero resultant force?

  A non-zero resultant force will cause an object to accelerate
• If a particle experiences an unbalanced force to the right, what will happen?

  The particle will accelerate to the right
• What are the five possible outcomes of acceleration to the right for a particle?

  If stationary, it moves right; if moving right, it speeds up; if moving left, it slows down; if moving left slowly, it may stop; it can change direction without speed change
• How is acceleration defined in terms of velocity and time?

  Acceleration is the change in velocity divided by the change in time
• Why does the moon accelerate even though its speed remains constant in circular motion?

  Because its direction is constantly changing
• What causes the moon to orbit the Earth?

  The gravitational pull of the Earth's mass on the moon
• What is the relationship between resultant force and acceleration according to Newton's second law?

  The size of the resultant force is directly proportional to the acceleration
• What is the equation that relates force, mass, and acceleration?

  F = m a
• How do you calculate the resultant force if a force of 30 newtons acts to the left and 42 newtons to the right?

  The resultant force is 12 newtons to the right
• If a particle has a mass of 0.25 kg and a resultant force of 12 newtons, what is its acceleration?

  The acceleration is $48 \text{ m/s}^2$
• What is inertia?

  Inertia is the tendency for the motion of an object to remain unchanged
• How does Newton's first law relate to inertia?

  It states that objects at rest stay at rest and objects in motion stay in motion unless acted on by a resultant force
• How is inertial mass defined?

  Inertial mass measures how difficult it is to change an object's velocity
• How do you calculate inertial mass?

  By dividing force by acceleration
• What does a large mass indicate about an object's inertia?

  A large mass indicates a lot of inertia, requiring a large force to change its velocity
• What is the conclusion of the video regarding Newton's laws and inertia?

  Newton's laws explain the motion of objects and the concept of inertia