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Gravity
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∙ 12y ago
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Why would a ball would never stop moving if you give it a push (apply a force to it) in outer space?
There is no force of drag or friction acting to slow it down.
What keeps the force of a ball on a string moving in a circle?
No. The force keeping a ball on a string moving in a circle is centripetal force, i.e. force pulling the ball to the center of the circle.
How will the path of the ball appear to you if you accidentally drop a ball while inside a moving bus?
If the bus is moving at a constant horizontal velocity relative to you and the ball, there is no horizontal acceleration and therefore no horizontal force. The only force acting on the ball is gravity, which is vertical, so the ball will just fall straight down next to you.
What is the name of the force that could also slow donw the ball and its motion?
Well, it depends on thedirection the ball is moving in, and the surface it is moving on/through. Commonly, it's Air Resistance that slows a moving ball in the air , when the ball is moving upwards through the air, Gravitational Force will slow it down. However, if the ball is moving downwards(towards the ground), there is practically no force acting on the ball to slow it down, so it will keep increasing speed until it bounces off the ground.When the ball moves across a surface (ex. wood, grass, tiles, carpet), it would take some amount of Friction to slow it down.
Why there must be an unbalanced force acting if an object is moving in a circle at constant speed?
If an unbalanced force was not acting upon it, it wouldn't be moving in a circle.An object with no unbalanced force will either not be moving, or be moving in a straight line due to Isaac Newtons 1st law of motion.
How can you tell from the path of the ball that there is another force acting on the ball other than the kicking force?
Inthe kicking force, kinetic energy is acting on the ball together with Gravitational Potential Energy. Whereas the part where aother force is acting on iit while the ball is not moving is alsoocontrolled by gravitaitional potential energy.
Why would a ball would never stop moving if you give it a push (apply a force to it) in outer space?
There is no force of drag or friction acting to slow it down.
What keeps the force of a ball on a string moving in a circle?
No. The force keeping a ball on a string moving in a circle is centripetal force, i.e. force pulling the ball to the center of the circle.
If a ball isn't moving which force causes it to start moving?
We might say that an unbalanced force causes a ball to start moving. If a ball is resting on a surface, gravity is pulling down and the surface is pushing up against it. Things (forces) are in balance and the ball is still. Drop the surface out from under the ball and that ball begins to fall as gravity has no opposing force to balance it.Any lateral force on the ball that can overcome its rolling resistance will cause the ball to move. The inertia of the ball is such that it "wants" to remain at rest. Some unbalanced force will have to act on the ball to cause it to start moving. A ball on a pool table sits still until struck by a cue or another ball. It takes an "outside" force to "unbalance" the forces acting on a ball that is at rest to cause it to move.
What happen when a ball rolling across the floor shows to stop?
When it stops it stops. Inertia will stop it from moving unless there is some force acting on it.
How will the path of the ball appear to you if you accidentally drop a ball while inside a moving bus?
If the bus is moving at a constant horizontal velocity relative to you and the ball, there is no horizontal acceleration and therefore no horizontal force. The only force acting on the ball is gravity, which is vertical, so the ball will just fall straight down next to you.
Why do moving body accelerate?
Not all moving objects accelerate. In general, an object will accelerate if there is a net force acting on it. For a ball in the air, this might be gravitation + air resistance; for a moving car (once you turn the engine off) it might be the force of friction; etc.
What would happen to an object if the centripetal force acting on it stops?
Picture a ball on a string being whirled about the head of an experimenter. If the string breaks, the centripetal force disappears. The ball leaves on a tangent path form its (previous) circular path. Yes, it's that simple. The string provided centripetal force, by virtue of its tensile strength, to the ball to keep that ball moving in a circle. When the string broke, there was no force left to accelerate the ball "in" and keep it moving in an arc.
What is the name of the force that could also slow donw the ball and its motion?
Well, it depends on thedirection the ball is moving in, and the surface it is moving on/through. Commonly, it's Air Resistance that slows a moving ball in the air , when the ball is moving upwards through the air, Gravitational Force will slow it down. However, if the ball is moving downwards(towards the ground), there is practically no force acting on the ball to slow it down, so it will keep increasing speed until it bounces off the ground.When the ball moves across a surface (ex. wood, grass, tiles, carpet), it would take some amount of Friction to slow it down.
What is the upward force acting when a vehicle is moving?
upthrust
Why there must be an unbalanced force acting if an object is moving in a circle at constant speed?
If an unbalanced force was not acting upon it, it wouldn't be moving in a circle.An object with no unbalanced force will either not be moving, or be moving in a straight line due to Isaac Newtons 1st law of motion.
The velocity time graph of a ball moving on surface of floor is shown in figure calculate the force acting on ball if mass of floor is 20gram?
a ball rolled across a horizontal table moved at cont ant velocity why?
