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Can an object with a constant acceleration reverse its direction of travel?
Of course. Anything you toss with your hand has constant acceleration after you toss it ... the acceleration of gravity, directed downward. If you toss it upward, it starts out with upward velocity, which reverses and eventually becomes downward velocity.
What opposing forces act on an object falling freely through the atmosphere?
The forces that affect the rate of a falling object are Gravity and Air Resistance. Gravity affects the speed and the velocity of the object by speeding it up as it falls closer to the earth, and Air resistance works against the object pushing against it.
What forces have to be balanced for terminal velocity to be reached by an object?
For an object in freefall, terminal velocity is reached when the drag force becomes equal and opposite to the force of gravity. This creates a net force of 0, resulting in no further acceleration.
What do you think may happen to leading edge of plate a as it continues to downward?
As the leading edge in forced down it is heated up and becomes part of the molten magma below.
When air is moving downward it is called?
When air is moving downward, it is called subsidence. Subsidence occurs when air cools and becomes denser, leading it to sink towards the Earth's surface. This sinking motion can inhibit cloud formation and lead to clear skies and stable weather conditions.
Describe how the velocity and acceleration of an object change as it fell from tall building?
The magnitude of the velocity will increase. The velocity will be downward - and since it increases, the acceleration will be downward. The acceleration doesn't change (it will remain constant at about 9.8 m/sec2), unless air resistance becomes significant.
When injustice becomes law?
Thomas Jefferson
Describe how the electric resistance of a wire changes as the wire becomes longer. How does the resistance change as the wire becomes thicker?
As the wire becomes longer, its resistance increases because there is more material for the electrons to travel through. On the other hand, as the wire becomes thicker, its resistance decreases because there is more space for the electrons to flow, reducing the collisions with the wire material and therefore lowering the resistance.
How does the weight of a falling body compare with the air resistance it encounters before it reaches terminal velocity?
The weight exceeds the force of air resistance, but as the speed increases the air resistance increases, so the net force (weight - air resistance) falls. When the difference becomes zero the acceleration ceases and you have terminal velocity.
What is weightlessness?
Weightlessness is a condition when the magnitude of weight of respective mass becomes zero.
Is it possible for an object not to be in full motion and still have forces acting on it?
Yes hanging load. Its weight ie force due to gravity is acting downward. And the tension the rope is acting upward. Both the forces are acting on the load but as they are equal in magnitude and opposite in direction the resultant becomes zero.
What is the magnitude of the velocity of a vertical projectile at its maximum height is equal to?
The horizontal component of a projectile's velocity doesn't change, until the projectile hits somethingor falls to the ground.The vertical component of a projectile's velocity becomes [9.8 meters per second downward] greatereach second. At the maximum height of its trajectory, the projectile's velocity is zero. That's the pointwhere the velocity transitions from upward to downward.
What would happen to circuit if there was no resistance?
a circuit with no resistance or zero resistance can be considered as open circuit in which the current is zero. without resistance the circuit just becomes open ()
How is cumulative effect of gravity and air resistance related to an objects termianl velocity?
The cumulative effect of gravity and air resistance determines an object's terminal velocity. Initially, gravity accelerates the object, while air resistance acts in the opposite direction. As the object gains speed, air resistance increases until it becomes equal in magnitude to the force of gravity. At this point, the net force on the object is zero, resulting in a constant terminal velocity where the forces are balanced.
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.
Each time the magnitude of an earthquake increases by one unit the measured ground motion becomes more larger?
Each unit increase in earthquake magnitude represents a tenfold increase in amplitude of ground motion. For example, a magnitude 6 earthquake produces 10 times larger ground motion than a magnitude 5 earthquake. This logarithmic scale is known as the Richter scale.
When a raindrop falls from clouds then as the gravitional force is counterbalanced by the viscous force of the air so it should not fall. But how it is falling?
You are wrong at this point. When the raindrop starts to fall, its weight is the only force acting on it. When it starts to accelerate due to this force, the drag force, or air resistance, becomes significant. The magnitude of the drag force will increase as it continues to accelerate, until it equals the magnitude of the weight. At this point, net force will be zero. However, according to Newton's first law, the object should continue to drop, but with constant speed. You are wrong in the belief that the magnitude of the air resistance is equal to the weight since the beginning. This is not the case. Instead, the magnitude of air resistance was zero when the raindrop starts to fall, but increases as it accelerates until it equals the weight. At this point, the drag force will no longer increase as the rain drop does not accelerate anymore.
