Speed - Velocity Flashcards
What is the key equation for velocity?
Velocity = Displacement/time
What is the symbol equation for velocity?
V = s/t
V = Velocity in meters per second (m/s)
S = Displacement, measured in m
T = Time, measured in seconds (s)
What is velocity?
Velocity is a vector quantity, so it uses displacement, s, rather than the distance which is scalar.
What does acceleration mean?
Acceleration is defined as the rate of change in velocity.
What is the key equation for acceleration?
Acceleration = change in velocity/change in time
How is change in velocity found?
The change in velocity is found by the difference between the initial and final velocity.
What is the symbol equation for acceleration?
A = v/t
What does acceleration and deacceleration on a graph represent?
Acceleration - Speed up (Positive)
Deacceleration - Slow down (Negative)
What does a, v, t represent?
a = acceleration in meter per second square (m/s2)
V = Change in velocity in meters per second (m/s)
T = Time is taken in seconds (s)
Why is acceleration in m/s square?
m/s / s
m/s x 1/s = m/s2
What is the formula for change in velocity?
Change in velocity = Final velocity - initial velocity
V = v - u
What do, v and u represent in the previous formula?
v = final velocity in meters per second (m/s)
U = Initial velocity in meters per second (m/s)
What happens when an object speeds up and slows down?
Speeds up = Positive acceleration
Slows down = Negative deacceleration
