What is the difference between a scalar and vector quantity?
Scalar: Only magnitude (e.g., speed = 5 m/s)
Vector: Magnitude + direction (e.g., velocity = 5 m/s north)
Give 3 examples of vector quantities
Velocity, force, acceleration
What does a horizontal line show on a distance-time graph?
The object is stationary (not moving)
How do you calculate speed from the graph?
Speed = gradient =
Change in Distance
_____________________
Change in Time
A car accelerates from 10 m/s to 30 m/s in 5 seconds. Calculate acceleration.
a = (30-10)/5 = 4 m/s²
What does the gradient represent?
Acceleration (change in velocity over time)
What does the area under the graph represent?
Distance travelled
What does a steep straight line show?
Constant high speed
Distance =
Area under velocity-time graph
give 3 examples of scalar quantities
speed, distance, time
what is velocity
speed in a given direction
what does a curve on a distance time graph show
changing speed
what does negative acceleration mean
deceleration or slowing down
what does a downward slope show
deceleration
what is the difference between distance and displacement
distance is total path travelled displacement is shortest straight line with direction
