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To start with we have to change the speed right from zero to some value. So force is required and with that force work is to be performed. Hence energy is needed. After attaining that speed thereafter we need energy just to compensate the loss due to friction. Hence maintenance of the uniform motion is easier than attaining that uniform speed right from rest.
If v is the speed attained for a mass m, then 1/2 m v^2 is the energy required. There after just frictional force x displacement is energy required to maintain the motion.
What else can I help you with?
What effect does friction have when you try to move a object at rest?
Friction opposes the motion of an object at rest, making it more difficult to start moving. The force required to overcome static friction and initiate motion is typically higher than the force needed to maintain constant motion.
What type of friction is making it difficult to start moving the box?
Static friction is the type of friction that makes it difficult to start moving the box. This occurs when there is no relative motion between two surfaces in contact. The force required to overcome static friction and initiate movement is typically higher than the force required to keep an object in motion.
The motion of a 150g ball is more difficult to change than the motion of a 50g ball because the 150g ball has?
more inertia due to its greater mass, making it resist changes in its velocity or direction more than the lighter 50g ball.
Why is momentum considered a very important quantity?
Momentum is considered important because it is a measure of an object's motion. It provides valuable information about how difficult it is to stop or change the direction of an object in motion. The conservation of momentum is a fundamental principle in physics that helps us understand and analyze many real-world phenomena, such as collisions and explosions.
Why is it harder to walk in water than in air?
Walking in water is more difficult than walking in air due to water's higher density and viscosity. These properties create more resistance against motion, making it harder to move through water compared to air. Additionally, the buoyant force of water can also make it more challenging to maintain balance and stability while walking.
What effect does friction have when you try to move a object at rest?
Friction opposes the motion of an object at rest, making it more difficult to start moving. The force required to overcome static friction and initiate motion is typically higher than the force needed to maintain constant motion.
The motion of a 150g ball is more difficult to change than the motion of a 50g ball Why?
Due to the greater mass, the momentum will high, hence making its motion difficult to change.
What type of friction is making it difficult to start moving the box?
Static friction is the type of friction that makes it difficult to start moving the box. This occurs when there is no relative motion between two surfaces in contact. The force required to overcome static friction and initiate movement is typically higher than the force required to keep an object in motion.
Why is it more difficult to push a stalled car from rest than to keep it in motion one it has started to run?
Newton's law of motion.
Why it is more difficult to start a roller then to keep it rolling when once started?
First you have to overcome inertia. At rest it takes 3 to 6 times more energy to get a wheel rolling than it does to maintain revolutions.
Why is it more difficult to push a stalled car from rest to keep it in motion once it has started to run?
Force = mass X acceleration. When you start pushing a stationary 'dead weight' you are making it go faster than it was or accelerating it. Once the car is moving at a steady speed, it is no longer being accelerated. The greater the mass or inertia of an object the more it will resist changes in its motion. (See Newton's Laws of Motion.)
The motion of a 150g ball is more difficult to change than the motion of a 50g ball because the 150g ball has?
more inertia due to its greater mass, making it resist changes in its velocity or direction more than the lighter 50g ball.
Are flower gardens more difficult to maintain than vegetable gardens?
This does not have an easy answer. This has to do with your level of expertise and how comfortable you are with the flowers or vegetables.
Why is momentum considered a very important quantity?
Momentum is considered important because it is a measure of an object's motion. It provides valuable information about how difficult it is to stop or change the direction of an object in motion. The conservation of momentum is a fundamental principle in physics that helps us understand and analyze many real-world phenomena, such as collisions and explosions.
Why is it more difficult to revolve a stone by tying it to a long string than by tying it to a shorter string?
Revolving a stone tied to a long string is more difficult than with a shorter string due to the increased moment of inertia. A longer string allows the stone to travel a larger circular path, requiring more force to maintain the same angular velocity. Additionally, the longer distance increases the tension in the string, which can make it harder to control the stone's motion. The centripetal force needed to keep the stone in circular motion also increases with the radius, adding to the difficulty.
Why do you need small force to maintain a heavy object in motion?
Inertia is the resistance to change of an object in motion. In other words, an object at rest wants to stay at rest, and an object in motion wants to stay in motion. this is why it might take a person's whole body strength to start pushing a car down the road from a dead stop, but once it is in motion, it may only take one hand to keep it moving. Once you stop pushing the car, it slows and eventually stops because the frictional forces acting against the car's motion are greater than those keeping it moving.
Why rollhng motion is easier than sliding motion?
Rolling motion is easier than sliding motion because rolling motion has a lower friction force exerted upon the object than sliding motion.
