Physics: Unit 2 - Newton's Laws

What’s newton’s first law?

• An object will remains stationary or keep moving with a constant speed and direction unless acted on by a resultant force.

whats another name for newton’s first law

law of inertia

what’s the equation for newton’s first law

Resultant force = 0, a = 0

what’s newton’s second law

if there’s a resultant force, an object will accelerate

what’s the equation for newton’s second law?

f=ma

what are the other equations for newton’s second law?

• a is directionally proportional to resultant force

• a is inversely proportional to mass

• a is the resultant force/mass

what’s the newton’s third law?

If object A, exerts a force on object B, object B exerts an equal sized force on object A in the opposite direction

what’s a vector?

magnitude and direction (velocity)

what’s a scalar

only magnitude (speed)