Physics Paper 1 Flashcards
What is a scalar quantity?
A measurement that has magnitude but NO direction
What is a vector quantity?
A measurement that has magnitude AND direction
What are 7 examples of vector quanitys?
Displacement Weight Drag Force Momentum Acceleration Velocity
What are 7 examples of scalar quantity? D\_\_\_\_\_\_\_\_ M\_\_\_\_ A\_\_\_\_ D\_\_\_\_\_\_\_ T\_\_\_\_\_\_\_\_\_\_\_\_\_\_ S\_\_\_\_\_\_\_ P\_\_\_\_\_\_\_
Distance Mass Area Density Temperature Speed Power
What is the difference between speed and velocity?
Velocity is speed in a stated direction
Complete the equation:
Speed(m/s) = distance (m) __ time(s)
Speed(m/s) = distance (m) ÷ time(s)
Complete the equation:
__________ = speed(m/s) × time(s)
Complete the equation:
distance (m) = speed(m/s) × time(s)
How do we determine speed from a distance time graph?
The gradient : change in Y / change in X
The _________ (slope) at any point gives the speed of the object
The gradient (slope) at any point gives the speed of the object
_____ sections show where the object has stopped
Flat sections show where the object has stopped
A ________ graph means the object is going faster
A steeper graph means the object is going faster
Curves represent ________
Curves represent acceleration
A curve getting steeper means that the object is _____________ (increasing gradient)
A curve getting steeper means that the object is speeding up (increasing gradient)
A leveling off curve means that the object is ___________(decreasing gradient
A leveling off curve means that the object is slowing down (decreasing gradient
What is the speed of sound in air?
340 m/s
What is uniform acceleration?
Speeding up (/slowing down) at a constant rate
What is acceleration?
The change in velocity in a certain amount of time
What us negative acceleration also called?
Deceleration
What equation is used to find average acceleration?
a = (v - u) ÷ t
What are the units of measurement for acceleration?
m/s²
a = (v - u) ÷ t
What does V represent?
V = final velocity in m/s²
a = (v - u) ÷ t
What does U represent?
U = initial velocity in m/s²
What is acceleration due to gravity (free fall) roughly equal to?
10 m/s²
What is the formula for uniform acceleration?
v² - u² = 2 × a × X
v² - u² = 2 × a × X
What does a represent?
a = acceleration in m/s²
v² - u² = 2 × a × X
What does X represent?
X = distance in meters
On a velocity/time graph what does the gradient represent?
Acceleration
What doe there area under neath a velocity/time graph represent?
Distance traveled
How do you calculate acceleration on a velocity/time graph?
Velocity ÷ time on the X and Y axis
