Motion (CP1)
- Created by: unicorncupkake
- Created on: 05-06-21 17:01
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- Motion
- Vectors and Scalars
- Vector quantities have both magnitude and direction
- Force, displacement, velocity, acceleration, momentum
- Scalar quantities only have magnitude
- Mass, distance, speed, energy, time
- Vector quantities have both magnitude and direction
- Distance/time graphs
- Example
- Speed equation: speed (m/s) = distance(m) / time (s)
- Speed is calculated from gradient of the line
- horizontal line mean object is stationary
- Straight, sloping line means object is travelling at a constant speed
- the steeper the line, the faster the object is travelling
- Acceleration
- It is a change in velocity - vector quantity
- Unit: m/s^2
- Acceleration due to gravity is 9.8m/s^2 / 10m/s^2
- Acceleration equations
- acceleration = change in velocity (m/s) /time taken (s)
- a=v-u/t
- final velocity^2-initial velocity^2 = 2 * acceleration * distance
- v^2-u^2=2ax
- acceleration = change in velocity (m/s) /time taken (s)
- Velocity/time graphs
- Example
- What the line means
- horizontal line means the object is travelling at a constant velocity
- gradient shows acceleration (line going down means object is decelerating)
- negative velocity shows the object is moving in the opposite direction
- distance is the area under the line
- calculate by using the numbers at the axis for measurement - not ruler
- Vectors and Scalars
- Scalar quantities only have magnitude
- Mass, distance, speed, energy, time
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