Forces: Acceleration. Flashcards

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1
Q

What is acceleration?

A
  • Change in it’s velocity over a given time.

- Slowing down= Deacceleration.

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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.
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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.

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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.
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