# Physics- Topic 1

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- Created by: Bethx1807
- Created on: 03-03-15 17:54

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- Speed is a measure of how far something travels is a certain amount of time.
- Speed and Velocity

- Speed= Distance/ Time
- Speed and Velocity

- The units depend on how you measure the distance and time.
- Speed= Distance/ Time

- Speed= Distance/ Time
- Velocity is a vector quantity.
- Scalors and Vectors
- Physics
- Force and Acceleration
- Acceleration= Change in Velocity/ Time Taken
- The size of the acceleration depends on the 'resultant' forces acting on an object and the mass of the object.

- Acceleration= Change in Velocity/ Time Taken

- Force and Acceleration
- The displacement is a vector quantity which shows how far the object is from its initial position.

- Physics
- When an object moves the distance is scalor measure of how far the object moved.
- Scalors and Vectors
- Physics
- Force and Acceleration
- Acceleration= Change in Velocity/ Time Taken
- The size of the acceleration depends on the 'resultant' forces acting on an object and the mass of the object.

- Acceleration= Change in Velocity/ Time Taken

- Force and Acceleration
- The displacement is a vector quantity which shows how far the object is from its initial position.

- Physics

- Scalors and Vectors
- Acceleration
- Acceleration is a measure of how fast something can change its speed.

- Gravity causes objects to accelerate as they fall.
- Acceleration is a measure of how fast something can change its speed.

- Motion Graphs
- Motion graphs tell us a 'story' about how an object has moved.
- Motion Graphs
- It does this by showing how distance, speed, displacement etc. vary within time.
- When familiar you can quickly get info at a given time.

- Motion Graphs
- You can also find the displacement when measuring the area under a velocity time graph.
- Motion graphs tell us a 'story' about how an object has moved.
- It does this by showing how distance, speed, displacement etc. vary within time.
- When familiar you can quickly get info at a given time.

- It does this by showing how distance, speed, displacement etc. vary within time.
- If the graph is not uniform, you can split the area into sections.

- Motion graphs tell us a 'story' about how an object has moved.
- Netwon's Laws
- Law 1: Any object will keep the same velocity unless there are unbalanced forces acting on it.
- Law 2: If unbalanced forces are acting on an object it will accelerate. F = M A
- Every forces has an equal and opposite force.

- Stopping Distances
- Braking Distance= The distance a car will travel whilst the brakes are engaged and the car comes to a halt.
- When a car needs to brake, then the distance it will travel is made up of two separate sections.
- Stopping Distances

- Stopping Distances

- When a car needs to brake, then the distance it will travel is made up of two separate sections.
- When a car needs to brake, then the distance it will travel is made up of two separate sections.
- STOPPING DISTANCE= THINKING DISTANCE + BRAKING DISTANCE

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