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Why smoke goes upward instead of going downward due to gravity?
Wiki User
∙ 10y ago
Smoke is less dense than the air so by buoyancy in fluid (air) it moves upwards.
Wiki User
∙ 10y ago
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Why do you feel heavier going up a lift?
The force of the lift accelerating you upward is added to the force dur to gravity. You feel this as added weight. The same effect happens when it stops moving going downward, and the opposite occurs when you begin going down or stop going up. You are not resisting the force of gravity and you do not feel the weight; for some of that time, you are actually freefall.
Toss a ball upward what is the change in speed each second on the way up and on the way down?
The change in speed each second is the same whether the ball is going upward or downward
How is newtons laws of motion used in cheerleading?
Newton's First Law: The person is at rest while she (I'll pretend it's a girl) is on the ground because no net force is acting on her. Then she is thrown in the air by the force of those throwing her- why does she come down? If we assumed that there was no forces acting on her, she would continue rising forever, but since she falls, there must be a force which causes her motion to change (i.e. to slow down and then reverse direction). That force is gravity. Once on the ground again, she is no longer in motion because the downward pull of gravity is balanced by the upward normal force of the ground, and the net effect is zero force. Newton's Second Law: When in the air, the girl is moving initially with upward velocity, but she slows down and then starts to fall. She must be experiencing a downward force, which again is the force of gravity. You know this because she is accelerating downward, so then you can conclude that gravity is acting in a downward direction. Newton's third law: Ask the throwers- do they feel anything when they throw the girl in the air? They definitely feel pressure on their arms/hands as they throw her upward, because as they exert and upward force on her, she exerts a downward force on them equal in magnitude. The harder they throw her, the more the force they feel on themselves.
Is it bad to have mirror in front of stairs?
It depends, do you fall down the stairs a lot? (if downward-forward) Do you run into walls consistently after going up? (if upward-forward)
Why do falling objects move faster than objects going upward?
Because gravity always tried to pull objects towards the centre of the earth !
What is the answer to the brain teaser economy going upward?
Economy going downward.
Why do you feel heavier going up a lift?
The force of the lift accelerating you upward is added to the force dur to gravity. You feel this as added weight. The same effect happens when it stops moving going downward, and the opposite occurs when you begin going down or stop going up. You are not resisting the force of gravity and you do not feel the weight; for some of that time, you are actually freefall.
Toss a ball upward what is the change in speed each second on the way up and on the way down?
The change in speed each second is the same whether the ball is going upward or downward
Why things thrown upward goes back to the ground?
Because they are in Earth's gravity well. They would have to move much faster than you can throw them to keep going up instead of falling back down.
How is newtons laws of motion used in cheerleading?
Newton's First Law: The person is at rest while she (I'll pretend it's a girl) is on the ground because no net force is acting on her. Then she is thrown in the air by the force of those throwing her- why does she come down? If we assumed that there was no forces acting on her, she would continue rising forever, but since she falls, there must be a force which causes her motion to change (i.e. to slow down and then reverse direction). That force is gravity. Once on the ground again, she is no longer in motion because the downward pull of gravity is balanced by the upward normal force of the ground, and the net effect is zero force. Newton's Second Law: When in the air, the girl is moving initially with upward velocity, but she slows down and then starts to fall. She must be experiencing a downward force, which again is the force of gravity. You know this because she is accelerating downward, so then you can conclude that gravity is acting in a downward direction. Newton's third law: Ask the throwers- do they feel anything when they throw the girl in the air? They definitely feel pressure on their arms/hands as they throw her upward, because as they exert and upward force on her, she exerts a downward force on them equal in magnitude. The harder they throw her, the more the force they feel on themselves.
Is it bad to have mirror in front of stairs?
It depends, do you fall down the stairs a lot? (if downward-forward) Do you run into walls consistently after going up? (if upward-forward)
Why do you think downward communication is much more prevalent than upward communication in security organization?
Downward communication is more prevalent because in this type of communication we have to give orders and instructions to our sub-ordinates. So we have to explain each and every step that is going to help in work.But in upward communication they sub-ordinates do not have to give instructions the their Head..
What is downward spiral?
no good out of it, everthing is or going bad, its going in a downward spiral.
Why do falling objects move faster than objects going upward?
Because gravity always tried to pull objects towards the centre of the earth !
What are the two forces acting on you in an elevator?
1). The force of gravity attracts you downward. 2). The floor of the elevator car exerts an upward force on the bottom of your feet. When #1 is greater than #2, you accelerate downward, and you feel lighter than normal. That happens when the car is starting to go down, or finishing going up. When #2 is greater than #1, you accelerate upward, and you feel heavier than normal. That happens when the car is starting to go up, or finishing going down. When #1 and #2 are equal, you don't accelerate at all, and your weight feels normal. That happens when the car is standing still, or rising at a steady speed, or dropping at a steady speed.
What is the acceleration of a falling object?
The acceleration of a falling object is called gravity. A free-falling object has an acceleration of 9.8 m/s/s when going downward on Earth.
You were hit in the shin with a softball two weeks later the bruise has spread down to your ankle What is going on?
Gravity is pulling the blood released in the bruise from the shin downward to the ankle.
