Physics Review Flashcards

Flashcards based on lecture notes about Centripetal Force, Weight/Mass/Gravity, Waves, and Distance/Speed/Time.

Centripetal Force

A force that keeps an object moving in a circular path, directed toward the center of the circle.

Causes of Centripetal Force

Gravity, tension, or friction acting toward the center of a circle.

Result of Removing Centripetal Force

The object will move off in a straight line due to inertia.

Mass

The amount of matter in an object, measured in kilograms (kg).

Weight

The force of gravity acting on a mass, measured in newtons (N).

Formula for Weight

Weight = Mass x Gravitational field strength

Formula for Mass (Rearranged)

Mass = Weight / Gravitational field strength

Formula for Gravity (Rearranged)

Gravitational field strength = Weight / Mass

Mass Definition

How much matter you have.

Weight Definition

How strongly gravity pulls on mass.

Transverse Wave

A wave where particles move perpendicular to the wave direction.

Longitudinal Wave

A wave where particles move parallel to the wave direction.

Compressions

Areas of high pressure in a longitudinal wave.

Rarefactions

Areas of low pressure in a longitudinal wave.

What Are The Sound Wave Types?

Longitudinal and Transverse Waves

Formula for Distance

Distance = Speed x Time

Formula for Speed

Speed = Distance / Time

Formula for Time

Time = Distance / Speed

Units for Speed

m/s or km/h

Centripetal Force Definition

The force required to keep an objects in a circular motion.

Mass Units

Measured in kilograms (kg).

Weight Units

Measured in newtons (N).

Gravitational Field Strength on Earth

10 N/kg on Earth

Examples of Transverse Waves

Water waves and light.

Example of Longitudinal Wave

Sound

Weight Equation

The formula: W = M x G

Distance Equation

The formula: D = S x T

Path of an Object with No Centripetal Force

A straight line.

Mass Measurement

Kilograms and is constant regardless of location.

Amplitude of Transverse Wave

The perpendicular displacement of the medium.