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Is it possible for a body to have zero velocity and non-zero acceleration?
Answer:Yes, but only instantaneously.Consider a thrown ball moving directly upward. At the highest point of its trajectory, the instanataneous velocity (the velocity at that precise instant) is zero even while the acceleration due to gravity remains non zero.
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.
How could an object accelerate while still traveling at a constant speed?
Acceleration means the velocity changes. Velocity is made up of speed and a direction, so if only the direction changes, the velocity still changes, and therefore there is acceleration. The typical example is moving around in a circle.
Why do you say that an object falling toward the earth is accelerating?
Because the constant force of gravity is acting on it, and the acceleration of an object is equal to(net force acting on the object) divided by (the object's mass).
Is acceleration always in the same direction as the unbalanced force?
No, acceleration is change in velocity. (And velocity is speed in a certain direction.) If an object slows down, then it is changing velocity and thus accelerating. (In this case, the acceleration is negative.) If an object changes direction, then it's velocity changes, so this is also acceleration. (This is centripetal acceleration.)
What is the acceleration of an object that reache terminal velocity?
When an object reaches terminal velocity, its acceleration becomes zero. Terminal velocity occurs when the drag force acting on the object equals the force of gravity pulling it downwards, resulting in no net force and thus no acceleration.
What is the effect of gravity on velocity?
Gravity affects velocity by changing the acceleration of an object. As an object falls, gravity accelerates it, increasing its velocity. Without gravity, an object would move at a constant velocity.
Why does gravity change velocity?
Gravity changes velocity because it accelerates objects towards the Earth at a rate of 9.81 m/s^2. As objects fall, their velocity increases due to this gravitational acceleration. Conversely, when objects move against gravity, such as when thrown upwards, gravity decreases their velocity until they eventually stop and fall back down.
In what ways is a bouncing ball accelerating?
-- On the way down, its speed is increasing, which is a change in velocity, i.e. an acceleration. -- At the bounce, its direction changes, which is a change in velocity, i.e. an acceleration. -- On the way up, its speed is decreasing, which is a change in velocity, i.e. an acceleration.
When a falling object has reached its teminal velocity its accleration?
When a falling object reaches its terminal velocity, its acceleration becomes zero. The downward force of gravity is balanced by the upward force of air resistance, resulting in no overall acceleration.
What causes variation in velocity of particle?
Variation in velocity of a particle can be caused by external forces acting on the particle, such as gravity or friction. Additionally, changes in direction or acceleration can also lead to changes in velocity. In a vacuum, an object will continue at a constant velocity due to inertia.
What is the only factor needed to calculate change in velocity due to acceleration of gravity 9.8 m s?
The only factor needed to calculate change in velocity due to acceleration of gravity is time. The formula to calculate the change in velocity is: change in velocity = acceleration due to gravity * time.
What changes in a freely falling body?
In a freely falling body, its velocity increases due to the acceleration caused by gravity. The acceleration is constant (9.8 m/s^2 on Earth), and the body's motion is only affected by gravity, not air resistance. The body's position changes continuously as it falls towards the ground.
Projectile's vertical velocity component changes at a constant?
The vertical velocity component of a projectile changes at a constant rate due to the acceleration of gravity. This acceleration causes the projectile to speed up as it moves downward and slow down as it moves upward. The magnitude of the acceleration is constant near the Earth's surface, at approximately 9.8 m/s^2.
What must occur to expresss acceleration?
Acceleration is the rate at which an object's velocity changes, so for acceleration to occur, there must be a change in the speed, direction, or both of an object's motion. This change can be caused by a force acting on the object, such as gravity, friction, or a push.
Is it possible for a body to have zero velocity and non-zero acceleration?
Answer:Yes, but only instantaneously.Consider a thrown ball moving directly upward. At the highest point of its trajectory, the instanataneous velocity (the velocity at that precise instant) is zero even while the acceleration due to gravity remains non zero.
How is the initial velocity zero but the acceleration is not?
Going back to definitions, Velocity is change of distance with time; and acceleration is change in velocity with time. Initially, the velocity is zero, as is the acceleration, BUT the Force of Gravity attracts the falling mass, and causes velocity to appear. But the continued application of the Force of Gravity causes the velocity to increase. And as we know, increase in velocity is acceleration. [space for QED]
