Momentum & Newton’s Laws

Momentum

Momentum “Mass in Motion” Depends on how much stuff is moving and how fast the stuff is moving Mass x Velocity Kg * m/s Magnitude and Direction

Comprehension What is the momentum of a… 60 kg halfback moving east at 9 m/s 1000 kg car moving north at 20 m/s 40 kg freshman moving south at 2 m/s A car posses 20,000 units of momentum. What would the car’s new momentum be if … Its velocity was doubled Its velocity was tripled Its mass was doubled Both its velocity and mass were doubled

Newton’s First Law An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force

Newton’s Second Law An object will only accelerate if there is a net or unbalance force acting upon it F=ma

Newton’s Third Law For every action, there is an equal and opposite reaction