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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
∙ 12y ago
Wiki User
∙ 12y 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.
At the highest point, the object's downward velocity is zero. This is because the object momentarily stops moving upward and starts to fall back down due to gravity.
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
∙ 12y 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 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?
Yes, the acceleration due to gravity always points vertically downward, regardless of the direction of an object's velocity. This is because gravity is a force that attracts objects towards the center of the Earth.
What is velocity if the net force is 0?
If the net force acting on an object is 0, then the object will move with a constant velocity. This means that the object will neither speed up nor slow down, but continue to move at a consistent speed in a straight line. This is described by Newton's first law of motion.
What is the velocity of an object thrown vertically into the air at its highest point?
At the highest point, the velocity of an object thrown vertically into the air is momentarily zero as it changes direction. This is the point where it transitions from going upward to downward.
What is downward velocity?
Downward velocity refers to the speed at which an object is falling towards the ground or moving in a downward direction. It is commonly measured in units such as meters per second or feet per second. A positive downward velocity indicates the object is accelerating downward, while a negative velocity means the object is moving upward.
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 the highest point, the velocity of the object is momentarily zero. This is because the object has come to a stop before changing direction from upwards to downwards.
When the upward and downward forces on a falling object are equal the object reaches?
When the upward and downward forces on a falling object are equal, the object reaches terminal velocity. At terminal velocity, the object stops accelerating and falls at a constant speed.
Can you cite an example in which the acceleration of a boby is opposite in direction to it's velocity?
When an object is thrown upward, the acceleration due to gravity acts downward while the velocity is directed upward. This leads to a decrease in the speed of the object until it reaches its highest point and changes direction.
What is the velocity of object when it is thrown above?
The velocity of an object thrown upwards will gradually decrease due to the force of gravity acting against it. At the highest point of its trajectory, the velocity will momentarily be zero before starting to fall back down.
What forces are acting on an object when it is falling at terminal velocity?
When an object is falling at terminal velocity, the forces of gravity pulling it downward and air resistance pushing upward are balanced. This results in a constant velocity for the object as it falls.
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).
Draw the Velocity Versus Time graph for an object that is dropped from the top of a building and has no initial speed?
The velocity versus time graph would be a straight line sloping downward. The velocity would start at 0 when the object is released, then increase linearly in the negative direction as it accelerates due to gravity.
What is velocity at which a falling object travels when the force of air resistence matches exactly the downward force of gravity?
terminal velocity
Why at the highest point is the change in velocity zero?
At the highest point in a projectile's motion, the velocity is zero because it has come to a momentary stop before starting to fall back down due to gravity. This is the point where the vertical velocity changes direction from upward to downward.
When the upward and downward forces on a falling object or changes its direction is called an?
Terminal Velocity.
