Flashcards
Edexcel GCSE Physics Topic 2
Flashcards do conjunto (23)
- 1What is a Scalar Quantity?A quantity with a magnitude but no direction
- 2What is a Vector Quantity?A quantity with both a magnitude and a direction
- 3What are some examples of Scalar Quantities?> Distance
> Speed
> Mass
> Time (i mean technically if we ever invent time travel, it'll be a vector)
> Energy - 4What are some examples of Vector Quantities?> Displacement
> Velocity
> Acceleration
> Force
> Weight
> Momentum - 5What is Velocity?Speed with a Direction
- 6What Equation Relates Speed, Distance and Time?Distance = Speed * Time
or
Speed = Distance ÷ Time
or
Time = Distance ÷ Speed - 7Explain the Three First Points on this Graph> Constant Velocity
> Stationery
> Greater Constant Velocity - 8Explain the Relation Between Gradient and Velocity on a Distance-Time GraphThe Greater the Gradient, the Greater the Velocity
- 9Explain the Four Points on this Graph> Constant Acceleration
> Constant Velocity
> Greater Constant Acceleration
> Constant Deceleration
- 10Explain the Relation Between Gradient and Velocity on a Velocity-Time GraphThe Greater the Gradient, the Greater the Acceleration
- 11What Equation Relates Acceleration, Δ Velocity, and Time?v - u = at
or
a = (v - u) ÷ t
or
t = (v - u) ÷ a - 12What Equation Relates the Final Velocity Squared, the Initial Velocity Squared, Acceleration and Distance?v² - u² = 2ax
or
x = (v² - u²) ÷ 2a
or
a = (v² - u²) ÷ 2x - 13What Laboratory Method could be Used to Determine the Speed of an Object?Light Gates
- 14What is the Acceleration in Free Fall (g)10m/s²
- 15What is the (approximate) Gravitational Field Strength on Earth (g)?10N
- 16What is the Equation for Neuton's Second Law?F = ma
or
m = F ÷ a
or
a = F ÷ m - 17What is the Equation that Relates Weight, Mass and Gravitational Field Strength?W = mg
or
m = W ÷ g
or
g = W ÷ m - 18What is Terminal Velocity?> When an Object Falls, there are Two Vertical Forces (Weight and Air Resistance)
> As the Object Falls, it Accelerates
> As the Object's Velocity Increases, the Air Resistance also Increases
> Eventually the Object's Weight and the Air Resistance Balance Eachother Out, Remaining at a Constant Velocity (Terminal Velocity) - 19What is Stopping Distance?The Sum of Thinking Distance and Braking Distance
Stop. Dis. = Think. Dis. + Brake. Dis. - 20What are some Factors that Impact Braking Distance?> The Mass of the Vehicle
> The Speed of the Vehicle
> The Road Condition
> The Brakes' Conditions
> The Tires' Conditions
> The Friction Between the Road and Tires - 21What are some Factors that Impact Thinking Distance?> Tiredness
> Drugs (Specifically Alchohol)
> Distractions, such as Loud Music
> The Speed of the Vehicle - 22What Equation Links Kinetic Energy and Work Done?Fd = 0.5mv²
- 23What Happens to the Braking Distance when the Velocity is Doubled and Why?> It Quadruples
> Fd = 0.5mv²
> Since it's squared, Doubling equals 2² = 4
> So you multiply by 4
> d ∝ v²
Informações
- Descrição
- gcse Physics FlashCards sobre Edexcel GCSE Physics Topic 2, criado por Malachy Moran-Tun em 15-05-2019.
- Criado por
- Malachy Moran-Tun
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