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Motion and momentum Typeit
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An object's is the distance it has travelled from a specific point of origin, in a chosen direction.
An object's velocity is the speed at which an object is travelling in a chosen direction - this is how much space is covered in a given time.
An object's rate of change of velocity is its .
The distance an object has covered can be found from the of a velocity-time graph, and the rate of change of velocity can be found from the of a velocity-time graph.
It's important to know about an object's motion when discussing vehicle safety. The stopping distance of a vehicle changes with its initial speed, and is made up of:
An object's motion depends on the forces acting on it. The way forces affect motion can be described using Newton's laws of motion.
is a property of all objects given by the equation p = m × v. The force exerted on an object is equal to the rate of change of this property.
An object's velocity is the speed at which an object is travelling in a chosen direction - this is how much space is covered in a given time.
An object's rate of change of velocity is its .
The distance an object has covered can be found from the of a velocity-time graph, and the rate of change of velocity can be found from the of a velocity-time graph.
It's important to know about an object's motion when discussing vehicle safety. The stopping distance of a vehicle changes with its initial speed, and is made up of:
- distance - the distance covered by the vehicle while the brakes are applied
- distance - the distance covered by the vehicle before the driver has a chance to decide to stop and act
An object's motion depends on the forces acting on it. The way forces affect motion can be described using Newton's laws of motion.
- Newton's first law states that an object with acting will remain at rest or travelling at the same velocity.
- Newton's second law states that the acceleration of an object depends on the force acting on the object and the object's mass. This can be expressed in the equation Force = (use x as a multiplication symbol, and / as a division symbol).
- Newton's third law states that any force on an object will cause the object to react by exerting a force which is in size and in the direction to the original force.
is a property of all objects given by the equation p = m × v. The force exerted on an object is equal to the rate of change of this property.