newtons first law of motion

• How can you apply Newton's first law?

  To moving and stationary objects
• What do Newton's Laws of Motion describe?

  The effects of forces on motion
• What happens if the resultant force on a stationary object is zero?

  The object remains stationary
• What occurs if the resultant force on a moving object is zero?

  The object continues moving at the same velocity
• What does a balanced force on a stationary object indicate?

  The resultant force is zero
• What does it mean for an object to have no resultant force acting on it?

  Both speed and direction stay the same
• What is the speed of the car driving at a constant speed?

  15 m/s
• What must be true if a car is moving at a constant speed?

  An equal force acts in the opposite direction
• What are resistive forces?

  Friction with air and road
• What happens when a resultant force acts on a stationary object?

  The object accelerates in the direction of the force
• What does a resultant force cause an object's speed to do?

  Change
• How can a resultant force affect an object's direction?

  It can change the object's direction
• What happens when a resultant force acts on an object moving at constant speed?

  The object can decelerate or accelerate
• What does a resultant force acting upwards do to an object moving at constant speed?

  It causes the object to accelerate upwards
• What are the key points of Newton's first law of motion?

  • An object at rest stays at rest if no force acts.
  • An object in motion continues in motion if no force acts.
  • Velocity changes only if a resultant force acts.
• What are the effects of balanced forces on stationary and moving objects?

  • Stationary objects remain stationary.
  • Moving objects continue at the same velocity.
• What are the implications of a resultant force acting on an object?

  • Causes acceleration or deceleration.
  • Can change the direction of motion.