CAIE Physics - Dynamics

What is mass in terms of motion?

The property of an object that resists changes in motion.

What Newton Second Law it imply about acceleration and resultant force?

A larger net force acting on an object causes a larger acceleration, and objects with larger mass require more force to accelerate.

How is linear momentum defined?

The product of an object's mass and velocity

How is force defined in terms of momentum?

The rate of change of momentum

Can you state and apply Newton's First Law of Motion?

(Law of Inertia): 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.

What does Newton's Second Law of Motion state and how is it applied?

The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.

Newton's Third Law of Motion explaination

For every action, there is an equal and opposite reaction.

Weight defintion

The effect of a gravitational field on a mass

Formula for Newton's First Law (Law of Inertia)

F(net) = 0

Formula for Newton's Second Law

F = ma

Formula for Newton's Third Law

Fa on b = -Fb on a

Weight formula

W = mg

Linear momentum formula

p = mv

Force Formula (In terms of momentum)

F = Δp / Δt = (mv - mu)/Δt

Principle of Conservation of Linear Momentum

Drag

force that increases with speed.

Frictional force

forces that oppose motion between surfaces

viscous/drag forces

resist motion through fluids like air