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I used to do a bit of parachuting back in the 70s and terminal velocity was always reckoned to be about 120 mph (200 kph) achieved after about 12 seconds in free fall. But different objects will have different TVs, depending upon how aerodynamic they are. In physics, When an object is in a freefall,
and it reaches its terminal speed,
there is no net force,
and so its acceleration is zero. Going down, the direction of the air resistance is downwards, whereas that of the weight is upwards.
Going up, air resistance R and weight W are in the same direction. i.e. downwards.
By F=ma,
When an object is thrown vertically upwards,
at the instant its speed equals this terminal speed on the way up,
the magnitude of its acceleration is 20ms-2.
the direction is downwards. then by v = u + at,
you can easily calculate the terminal velocity in many different cases.
What else can I help you with?
What are two components used to define motion?
Velocity and acceleration are two components used to define motion. Velocity describes the speed and direction of an object's motion, while acceleration describes how quickly an object's velocity is changing.
How do you get initial velocity without acceleration?
If acceleration is zero, then the initial velocity can be calculated by dividing the change in position by the change in time. This formula assumes that there are no external forces acting on the object to affect its velocity.
What is define as the rate of change of velocity over a given time?
Acceleration is defined as the rate of change of velocity over a given time. It measures how quickly an object's velocity is changing, either in terms of speed or direction. It is a vector quantity that has both magnitude and direction.
Define drift velocity?
Drift velocity is the average velocity with which charged particles, such as electrons, move in a conductor in the presence of an electric field. It is a very slow velocity due to frequent collisions with atoms in the material. Drift velocity is responsible for the flow of electric current in a circuit.
Is distance time and force velocity quantities?
Distance and time are quantities that are independent of each other and are fundamental in physics. Force and velocity, on the other hand, are related quantities where force is the product of mass and acceleration, and velocity is the rate of change of displacement.
What is the property of an objects mass and velocity?
An object's mass and its velocity define the object's MOMENTUM.
Is velocity distance divided by time?
No, but distance divided by speedis.
What is momentum define?
what is the definition for momentum
Limitations of work energy theorem?
it doesn't define direction of velocity
What is DTR stands for?
Data Terminal Ready Define the Relationship in the MTV show Awkward
What are two components used to define motion?
Velocity and acceleration are two components used to define motion. Velocity describes the speed and direction of an object's motion, while acceleration describes how quickly an object's velocity is changing.
What caliber of rifle has the highest muzzle velocity?
you will have to define if you mean commercial or wildcat.
which quantities define momentum?
The quantities of production in mass of a particle with velocity describe momentum.
Velocity differs from speed in that velocity indicates?
Velocity is a vector quantity, which means that a body's speed and direction are both required to define it. They are different because: Speed is the rate of change of distance with time but velocity is the rate of change of displacement with time.
Define and describe how to calculate velocity?
Velocity of a body is the distance travelled by it per unit time in a given direction. Velocity is a vector quantity as it has both magnitude as well as direction. Velocity can be calculated using any of the 3 laws of motion given by Newton.
Define blocking in a switched network?
blocking refers to when an input terminal cannot be connected to an output terminal because there is no path available between them i.e. all possible intermediate switches are occupied
Can the speed of body be negative?
The problem here is the conflating of the term "speed" with "velocity". Velocity is a vector - it has both intensity and direction. Velocity can be negative. Speed really only has magnitude, so it is normally only positive; since there is no direction associated you can't define a meaning for negative speed (unless you decide to define it as synonymous with velocity) When a body is thrown in upward direction and upward motion is defined as positive velocity, its velocity decreases with time and at highest point speed and velocity become zero. When the body falls downward its speed i increases until hit the ground but since it is moving in the opposite of the direction that was defined as "positive", its velocity is negative.
