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When an object is thrown straight up at the highest point the downward velocity is?
Wiki User
∙ 13y ago
A rock has the same constant acceleration from the moment it leaves your hand
until the moment it hits the ground. It doesn't matter whether you dropped it or
threw it, or in what direction it left you.
The acceleration is 9.8 meters (32.2 feet) per second2 directed downwards.
That's the acceleration of gravity on earth.
As you asked, let's say you tossed it straight upwards. A tiny instant before it
reaches the exact top, it has a small upward speed. A tiny instant after it passes
the exact top, it has a small downward speed. During that tiny space of time, its
upward speed decreases and its downward speed increases. That's a downward
acceleration in anybody's book.
Wiki User
∙ 11y ago
Wiki User
∙ 11y ago-- Just before it reaches the exact top, its velocity is directed upward.
-- Just after it reaches the exact top, its velocity is directed downward.
-- This can only happen if there is an instant somewhere in there when its velocity is zero.
-- That moment is at the exact top.
Wiki User
∙ 13y agoAt the very second that it is at the top of it's arc the rock would have a velocity of 0 m/s
Wiki User
∙ 11y agoIts acceleration during the whole trip is constant. Gravity provides the acceleration which is 9.81 m/sec^2.
At the exact top of its path, its velocity is zero.
Wiki User
∙ 12y agoZero.
Wiki User
∙ 13y agoZero
Wiki User
∙ 11y agoZero.
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When an object is falling at terminal velocity what is the net force acting on the object?
Zero. "Terminal velocity" means that the object is no longer accelerating; the downward force of gravity and the upward force of resistance are in balance.
When an object reaches terminal velocity what is the net force acting on the object?
When an object is at terminal velocity, the two forces due to gravity and drag are equal, so the object ceases accelerating. Its motion is constant and vertically downward.
What is velocity if the net force is 0?
If the net force on an object is zero, then velocity of the object is constant ... it moves in a straight line at a constant speed.
What is slope of velocity graph?
The slope of a straight line tells the rate at which your variables are changing. In this case, it tells you how your velocity is changing over time, which in physics is how we define acceleration. If you graph the velocity of an object vs time when it is falling through the air, it gives to the acceleration due to gravity because that is the acceleration all objects fall at.
Is the acceleration due to gravity always pointing vertically downward even for an object whose velocity is vertically upward?
Acceleration only depends on the direction of the applied force and is independent of the velocity of the object, so gravity is always pointing down.
When an object At the highest point there's an instant when the motion is changing from upward to downward then what is its velocity?
At that moment, its vertical velocity is zero. Its horizontal velocity may or may not be zero, i.e., it may be moving sideways as well.
Can an object have a zero velocity and a nonzero acceleration at the same time?
Yes. For example, if you throw an object up into the air, this will happen when it reaches the highest point. At that moment, its velocity is zero; on the other hand, at any moment, the object is accelerating downward at 9.8 meters per square second.
What is the velocity of object when it is thrown above?
The velocity of such an object changes all the time. Assuming you throw something directly upwards and there is no wind, it will go upwards, slower and slower, until it reaches its highest point. At that moment, its velocity is zero. Then, still as a result of gravity, it will move downward, faster and faster.
What is velocity at which a falling object travels when the force of air resistence matches exactly the downward force of gravity?
terminal velocity
Is terminal velocity the highest velocity that a falling object will reach?
Absolutely correct.
When the upward and downward forces on a falling object or changes its direction is called an?
Terminal Velocity.
When an object is falling at terminal velocity what is the net force acting on the object?
Zero. "Terminal velocity" means that the object is no longer accelerating; the downward force of gravity and the upward force of resistance are in balance.
Give a situation when an object is with 0 velocitybut wieh a constant accelaration?
If you through an object up, at its highest point it will have zero velocity (only for that instant). But all the time it is subject to an acceleration of 9.8 meters per square second (downward).
What object has the least inertia?
The magnitude of inertia of an object is we consider the velocity and mass.The object that has least inertia is object that has small mass and velocity.This because the small mass and velocity the easiest it to stop or stop it.As we know that inertia is the tendency of object to remain its state in rest or in uniform velocity in straight line.Small massan velocity of object the small tendency of object to remain it state in rest or in uniform velocity in straight line.
When an object reaches terminal velocity what is the net force acting on the object?
When an object is at terminal velocity, the two forces due to gravity and drag are equal, so the object ceases accelerating. Its motion is constant and vertically downward.
Can an object have a constant speed and velocity at the same time?
Yes. An object moving in a straight line at constant speed has constant velocity.
How does velocity varies with the vertical distance traveled by the object?
When an object falls vertically downward, its velocity increases according to the following equation:2aS=vf2 - vi2 or ,2*10*S=v2, orv=(20S)1/2.There is a second case in which a body is thrown vertically upward, here its velocity decreases as it moves upward. Here its velocity becomes zero as it reaches the highest point
