Newtons laws Flashcards
What is Newtons 2nd law
When the forces acting on an object do not balance, the
resultant force will cause the object to accelerate in the direction of the resultant force. F=MA
What is newtons 1st law
Newton’s First Law states that a body will continue in its state of rest or
uniform motion, in a straight line unless a net or resultant force acts upon it.
What is newtons 3rd law
Whenever two objects interact, the forces they exert on each other are equal and opposite.
What is terminal velocity
When the forces caused by the weight and air resistance become equal, a falling object stops accelerating
Inertia
The tendency for an object to resist any change in its movement
How is newtons 1st applied in skydiving
When a skydiver jumps from a plane, they continue moving forward with the plane’s velocity and begin accelerating downward due to gravity.
How is newtons 2nd applied in skydiving
As the skydiver falls, gravity exerts a downward force, causing the skydiver to accelerate. This acceleration continues until the force of air resistance (drag) increases enough to balance the force of gravity, leading to terminal velocity where the skydiver falls at a constant speed
How is newtons 3rd applied in skydiving
As the skydiver accelerates downwards, they push air molecules downwards and backwards, which in turn push the skydiver upwards and forwards, creating drag. This drag force increases with the skydiver’s speed and eventually balances the gravitational force, resulting in no net force and hence no further acceleration
