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If a rock is thrown upward what must be its acceleration at the top of its flight?
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If a moving bodycomes to restthen its acceleration is-?
To come to rest, its velocity must change, therefore it will accelerate. Once it is at rest, if it remains at rest, it will no longer accelerate, i.e., its acceleration will be zero.
When an object is thrown straight up into the air what is its acceleration when it is moving upward?
The acceleration at the top of the path will be the same as the acceleration at the moment the ball leaves the hand and all the way until the moment it hits the ground (or hand). Ignoring air resistance, the only force acting on the ball is gravity. so the acceleration is 'g' or approximately 9.81m/squared seconds in my part of the world. g depends on how close the ball is to the center of the earth.
A ball is thrown upward What can be said about the system?
The ball can be considered a closed system.
How does the weight of a falling body compare with the air resistance it encounters after it reaches terminal velocity?
If its speed of fall is no longer changing, then its acceleration is zero. That tells you that the forces on it must be balanced, so the upward force of air resistance must be exactly equal to the downward force of gravity.
Find mass given force and acceleration?
Force = mass x acceleration. Mass must be in kilograms and acceleration must be in meters per second squared.
If a moving bodycomes to restthen its acceleration is-?
To come to rest, its velocity must change, therefore it will accelerate. Once it is at rest, if it remains at rest, it will no longer accelerate, i.e., its acceleration will be zero.
When an object is thrown straight up into the air what is its acceleration when it is moving upward?
The acceleration at the top of the path will be the same as the acceleration at the moment the ball leaves the hand and all the way until the moment it hits the ground (or hand). Ignoring air resistance, the only force acting on the ball is gravity. so the acceleration is 'g' or approximately 9.81m/squared seconds in my part of the world. g depends on how close the ball is to the center of the earth.
A ball is thrown upward What can be said about the system?
The ball can be considered a closed system.
A firework is launched upward into the ait At 64ft above the ground it bursts in to a shower of sparks How long does it take to reach 64ft?
To know this, one must know the speed of the firework (assuming constant) or if you prefer calculus, you must know it's rate of acceleration.
How does the weight of a falling body compare with the air resistance it encounters after it reaches terminal velocity?
If its speed of fall is no longer changing, then its acceleration is zero. That tells you that the forces on it must be balanced, so the upward force of air resistance must be exactly equal to the downward force of gravity.
Find mass given force and acceleration?
Force = mass x acceleration. Mass must be in kilograms and acceleration must be in meters per second squared.
Is it possible for an object to be accelerating even after it has stopped moving?
Yes, a object can still be accelerating when the speed is zero, a classic example of which is throwing a ball straight up in the air, at the top of its trajectory it has an instantaneous velocity of zero while it is still accelerating towards the ground.
Should acceleration be constant?
Acceleration must be constant to use kinematic equations. Acceleration need not be constant if working with energy.
Why do you have to aim above a target that you want to hit with a thrown object?
Under the influence of gravity, every thrown object begins to accelerate downward as soon as it leaves the hand. The point of the aim must be above the target in order to compensate for the distance of fall during the object's flight time.
Do you agree with the statement an object with a zero velocity can have an acceleration greater than yero?
Of course. Toss a stone straight up. -- From the moment it leaves your hand until the moment it hits the ground, it has constant acceleration ... the acceleration of gravity, around 10 meters per second2. The number isn't important, only the fact that the acceleration of the stone is not zero until it hits the ground. -- Velocity-wise: The stone starts out with some upward velocity, which steadily decreases until it's at the top of its arc, then the velocity becomes downward and increases until the stone hits the ground. -- At the very top of the arc, there is a point where the velocity changes from upward to downward. In order for that to happen, there must be an instant when the velocity is zero. -- But the acceleration is constant and not zero, even at that instant when the velocity is zero.
What is the best way to analyze an object thrown into the air?
whenever an object is thrown in the air we must know the initial velocity with which the object has been thrown.
If an object falls with constant acceleration the velocity of the object must?
Changing at a constant rate equal to acceleration.
