Topic 1 - Velocity and Acceleration Flashcards
1
Q
what is the difference between speed and velocity?
A
speed is just how fast you are going, velocity has a specific direction
2
Q
what are speed and velocity measured in?
A
m/s or equivalent
3
Q
what is the formula for average speed?
A
speed = distance / time
4
Q
what is acceleration?
A
how quickly the velocity is changing - can be a change in speed, direction or both
5
Q
what is the unit for acceleration?
A
m/s²
6
Q
what is the formula for acceleration?
A
change in velocity / time
7
Q
what is the formula for final velocity?
A
final velocity² = initial vecloty² + 2 x acceleration x distance travelled
8
Q
what do acceleration formulas need to be correct?
A
constant acceleration
9
Q
what does a negative acceleration value mean?
A
something is decelerating
