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1. Gravity is acceleration. 2. speed is a scalar quantity. 3 . velocity is a vector quantity.
In other words, gravity is the force which accelerates matter towards the centre of a mass.
Speed is how fast something is moving in general.
Velocity is speed in one direction.
I suppose a link could be using the suvat equations with velocity and acceleration. But vector and scalar quantities don't mix very well.
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∙ 14y ago
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What is the overall rate of speed an object moves?
speedIn physics:If the direction doesn't matter, the word "speed" is used.If the direction DOES matter, the word "velocity" is used.
What is it when gravity and speed are balanced?
I assume you mean when the acceleration of gravity stops altering the velocity of a falling object. At this point the force of air friction is equal but opposite to the force of gravity, velocity stops increasing in magnitude. This is called "terminal velocity."
What is the speed an on object reaches when the force of gravity is balanced by air resistance called?
terminal velocity
When an object reaches terminal velocity and there is no net force what is the initial force that got it going to keep it in motion?
Gravity. The object starts at zero velocity, and gravity always pulls the same. Drag, however, increases when velocity increases. Terminal velocity is when gravity has accelerated the object to the speed where drag is the same as gravity.
What is escape volocity?
Escape velocity is the speed you would have to go to escape gravity.
The speed an object reaches when the force of gravity is balanced by the force of air resistance?
That is the object's terminal velocity.
What is the difference of speed from velosity?
Speed is a scalar, velocity is a vector. That is to say, when you talk about "speed", the direction doesn't matter; when you talk about "velocity", it does. A velocity is only completely specified if you know the magnitude AND the direction.
Why you must study escape velocity?
You don't. "Escape velocity" is a meaningless number. "Escape velocity" is the speed at which a CANNON SHELL must be fired in order to escape from the Earth's gravity well. With a powered rocket, you can "escape" from the Earth's gravity at ANY speed - as long as you have enough fuel.
What is critical speed of pump?
Critical velocity is the speed that a falling object reaches when gravity and air resistance equalize on the object.when a liquid posses streamlined motion and its velocity is less than certain limiting velocity is called critical velocity for fluids and critical velocity for satellites can be defined as the velocity will give stable orbit, this is called the critical velocity for satellites
To escape from a planets gravity an object must reach a speed called the?
Escape Velocity
How can a vehicle at the same time have a constant speed but changing velocity?
Speed is a scalar quantity (direction does not matter) and velocity is a vector quantity) ie velocity means speed in a specific direction. If you are changing direction (turning) in a car, your speed is the same, while your velocity changes.
How fast do you have to go for gravity not to take hold of you?
Speed does not matter- gravity will still have a pull.
