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In which of the following situations no work is done?
- a)A spaceship moves at constant velocity
- b)You push on a heavy box but cannot move it
- c)A child slides down a playground slide
- d)You slam on the brakes and your car stops quickly
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
In which of the following situations no work is done?a)A spaceship mov...
Explanation:
When we talk about work, we are talking about the energy transferred when a force is applied over a distance. In other words, work is only done when a force causes an object to move. With that in mind, let's look at the given situations:
a) A spaceship moves at constant velocity:
- If a spaceship is moving at a constant velocity, then there is no acceleration, and no net force acting upon it. Therefore, no work is being done.
b) You push on a heavy box but cannot move it:
- In this situation, you are applying a force to the box, but the box is not moving. Since there is no displacement, no work is being done.
c) A child slides down a playground slide:
- In this situation, the force of gravity is causing the child to slide down the slide. Work is being done by gravity as it is causing the child to move a certain distance.
d) You slam on the brakes and your car stops quickly:
- When you slam on the brakes of your car, the brakes are applying a force to the wheels, which in turn apply a force to the car. This force causes the car to slow down and stop. Work is being done by the brakes because they are causing the car to move a certain distance.
Therefore, the correct answer is option 'B', where no work is done when you push on a heavy box but cannot move it.
When we talk about work, we are talking about the energy transferred when a force is applied over a distance. In other words, work is only done when a force causes an object to move. With that in mind, let's look at the given situations:
a) A spaceship moves at constant velocity:
- If a spaceship is moving at a constant velocity, then there is no acceleration, and no net force acting upon it. Therefore, no work is being done.
b) You push on a heavy box but cannot move it:
- In this situation, you are applying a force to the box, but the box is not moving. Since there is no displacement, no work is being done.
c) A child slides down a playground slide:
- In this situation, the force of gravity is causing the child to slide down the slide. Work is being done by gravity as it is causing the child to move a certain distance.
d) You slam on the brakes and your car stops quickly:
- When you slam on the brakes of your car, the brakes are applying a force to the wheels, which in turn apply a force to the car. This force causes the car to slow down and stop. Work is being done by the brakes because they are causing the car to move a certain distance.
Therefore, the correct answer is option 'B', where no work is done when you push on a heavy box but cannot move it.
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Community Answer
In which of the following situations no work is done?a)A spaceship mov...
Explanation: When we talk about work, we are talking about the energy transferred when a force is applied over a distance. In other words, work is only done when a force causes an object to move. With that in mind, let's look at the given situations: a) A spaceship moves at constant velocity: - If a spaceship is moving at a constant velocity, then there is no acceleration, and no net force acting upon it. Therefore, no work is being done. b) You push on a heavy box but cannot move it: - In this situation, you are applying a force to the box, but the box is not moving. Since there is no displacement, no work is being done. c) A child slides down a playground slide: - In this situation, the force of gravity is causing the child to slide down the slide. Work is being done by gravity as it is causing the child to move a certain distance. d) You slam on the brakes and your car stops quickly: - When you slam on the brakes of your car, the brakes are applying a force to the wheels, which in turn apply a force to the car. This force causes the car to slow down and stop. Work is being done by the brakes because they are causing the car to move a certain distance. Therefore, the correct answer is option 'B', where no work is done when you push on a heavy box but cannot move it.
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In which of the following situations no work is done?a)A spaceship moves at constant velocityb)You push on a heavy box but cannot move itc)A child slides down a playground slided)You slam on the brakes and your car stops quicklyCorrect answer is option 'B'. Can you explain this answer?
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