P9: Motion Flashcards
1
Q
What does the gradient on a distance-time graph represent?
A
It represents the speed.
2
Q
What is the equation for speed?
A
Speed = Distance / Time
3
Q
What does it mean if the line on a distance-time graph is horizontal.
A
It means that the object is stationary.
4
Q
How is a constant speed shown on a distance-time graph?
A
It is a straight line moving upwards.
5
Q
What is velocity and what is acceleration?
A
Velocity is the speed in a given direction. Change in velocity per second is acceleration.
6
Q
What is the equation for acceleration?
A
Acceleration (m/s^2) = Change in Velocity / Time Taken
7
Q
What does the gradient, line and area represent on a velocity-time graph?
A
- Gradient of the line represents the acceleration.
- If the line is straight then the acceleration is constant, if horizontal then it is zero.
- Area under the line represents the distance travelled.
