newtons first law of motion

• What should you be able to describe by the end of the video?

  Newton's 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 that forces have on the motion of an object
• How many laws of motion did Newton propose?

  • Three laws of motion
• What happens to a stationary object if the resultant force acting on it is zero?

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

  The object will continue moving in the same direction at the same speed
• What is the definition of velocity in this context?

  Speed in a specific direction
• What does a stationary object with no forces acting on it demonstrate?

  It will remain stationary due to zero resultant force
• What happens when two equal forces of 50 Newtons act in opposite directions on a stationary object?

  The object will remain stationary
• What is the effect of no forces acting on a moving object?

  Both the speed and direction will stay the same
• If an object is moving with a 50 Newton force acting to the right and a 50 Newton force acting to the left, what will happen?

  The object will continue to move at the same velocity
• What is the key fact regarding the velocity of an object?

  The velocity will only change if a resultant force is acting on the object
• What is the driving force of a car moving at a constant speed of 15 m/s?

  The driving force of the engine
• What must be true if a car is moving at a constant speed?

  There must be an equal force acting in the opposite direction
• What are resistive forces?

  Friction with the air and friction with the road
• What happens when a resultant force of 50 Newtons acts on a stationary object?

  The object will accelerate to the right
• 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 with constant speed?

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

  It causes the object to accelerate upwards
• Where can you find questions on Newton's first law?

  • In the vision workbook