P9 Motion Flashcards
1
Q
Acceleration
A
change of velocity per second (in metres per second per second, m/s2)
2
Q
Deceleration
A
change of velocity per second when an object slows down
3
Q
Displacement
A
distance in a given direction
4
Q
Gradient (of a straight line)
A
change of the quantity plotted on the y-axis divided by the change of the quantity plotted on the x-axis
5
Q
Tangent
A
a straight line drawn to touch a point on a curve so it has the same gradient as the curve at that point
6
Q
Velocity
A
speed in a given direction (in metres/second, m/s)
7
Q
How to work out speed
A
Speed=distance divided by time and has units of metres per second
8
Q
Acceleration
A
A body will accelerate if its speed increases over time
9
Q
Distance
A
Distance=speed x time
10
Q
Units
A
Acceleration (m/s)2 Final velocity (m/s) Initial velocity (m/s) Time taken for change in speed
