Physics revision topic 1- Motion
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- Created on: 22-10-15 19:18
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- Physics revision topic 1- motion
- DISTANCE TIME GRAPHS
- These are used to help us to describe an object in motion
- A distance time graph shows the distance an object has moved this is shown on the Y axis (the distance from the start point)
- The X axis shows the time taken for the object to travel the said distance
- SPEED
- the speed of an object is the distance travelled per secound
- M/S
- the speed of an object is the distance travelled per secound
- GRADIENT
- the steeper the gradient the greater the speed
- when the object is stationary the line is horizontal
- If the object is going at a constant speed the line will be straight and it will slope upwards
- Velocity and acceleration
- Velocity is the speed of an object in a given direction
- If the object changes direction it changes the velocity, even if it stays at the same speed
- If the velocity of the object changes, it means that it accelerates
- VELOCITY TIME GRAPHS
- A velocity time graphs shows the velocity of the object (Y-axis) and the time taken (X-axis)
- GRADIENT
- The gradient of the velocity time graph shows the acceleration of the object the steeper the gradient the greater the acceleration
- If the line on a velocity time graph is horizontal it shows that the object is going at a constant speed meaning there is no acceleration
- If the gradient is negative this shows that the object is decelerating
- Velocity is the speed of an object in a given direction
- DISTANCE TIME GRAPHS
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