Motion Flashcards
Equation for:
Speed
Average speed = distance/time
Difference between speed and velocity
Velocity has a specific direction but speed doesnt
Calculate both speed and velocity
Khalfan runs a 400m athletic track in 55 seconds.
- Speed = 400/55 ≈ 7.3 m/s
- Velocity = 0 m/s
Define acceleration
The rate of change of velocity of a body, measured in m/s^2.
Equation of:
Acceleration
Acceleration = Change in velocity / Time
Equation for:
Velocity
Displacement/time
Distance - time graph
What does a flat line mean
No motion
Distance time graph
- What does a straight line upwards mean
- How about a curved one
- Constant speed for straight line
- Acceleration if curving upwards
- Deceleration if curving downwards
What does the gradient of a distance time graph represent
Speed
In a speed time graph
What does a flat line represent
Constant speed
In a speed time graph
What does a straight line upwards represent
Constant acceleration
In a speed time graph
What does a Curved line upwards represent
Increasing acceleration
In a speed time graph
What does a straight downwards line mean
Deceleration
In a speed time graph
What does the area under the line represent
Distance travelled
