Flashcards
9.2 Changes in speed
Cards in this deck (11)
- 1accelerationa change of speed/ a measure of how quickly the change of speed happens.
- 2why do objects fall towards the earththe force of gravity pulls the object towards the earth
- 3an acceleration of 9.8 m/s2 is called?1 g
- 4the speed of an object increases by how much every second that it falls10m/s or 36 km/h
- 5air resistancefriction between the air and a moving object
- 6terminal velocitythe final velocity at which an object falls, with no further acceleration possible due to air resistance
- 7average acceleration formulachange in speed divided by the time
- 83 typical accelerationsfree fall = 9.8 = 1g
a sneeze = 29.4 = 3g
rollercoaster = " - 9acceleration can measured in?meters per second (m/s) or 1 kilometer per hour or second(km/h/)
- 10what happens on a speed time graph?the gradient is the acceleration is the moving object, the area below a speed time graph is the distance that the object has traveled.
- 11—
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- Flashcards on 9.2 Changes in speed, created by hadil musawi on 08/05/2018.
- Created by
- hadil musawi · May 2018
- Updated
- May 8, 2018
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