Forces: Acceleration. Flashcards
1
Q
What is acceleration?
A
- Change in it’s velocity over a given time.
- Slowing down= Deacceleration.
2
Q
How do we work out acceleration?
A
- Acceleration (/ms^2)= Change in velocity (m/s)/time(s).
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3
Q
How do we calculate the acceleration using a velocity time graph?
A
- Gradient of velocity time graph= tells us acceleration of object.
- Horizontal Line: Constant velocity.
- Upwards sloping line: Acceleration.
- Downwards sloping line: Decceleration.
- Acceleration= Final Velocity - initial velocity/ time.
4
Q
How do we find the distance travelled in a spefic direction by using an velocity time graph?
A
- Total area under the graph
Constant acceleration or decelleration: divide graph into shapes and find area.
5
Q
How do we find the distance in a given direction if the acceleration is not constant?
A
- Count whole squares.
- Count an approximate for half squares and add them on.
- Find the area of one sqaure and times by number of squares.