no
Nope.
Work is calculated as force multiplied by the distance the force is applied over. If the force is applied but the object does not move, no work is done because there is no displacement. So, it is possible to apply force without doing work if there is no movement of the object.
Yes, it is possible for a nonzero net force to act on an object without changing its speed. This can happen if the force is acting perpendicular to the direction of motion, resulting in a change in direction but not speed (as in circular motion).
Yes. To get it without using a cheating device, search "Gotcha Force 20th Force Glitch" on Youtube.
Yes, that is possible. For example, an object in circular motion, accelerated towards the center. The force (and the acceleration) is normal (perpendicular) to the movement; thus, the dot product between the force and the displacement is zero.
Without information about the numbers, directions and frequencies and durations of "each push" it is not possible to tell.
Without a net force, an object won't accelerate - so, its velocity won't change over time.
possible, but so done without prejudice.......................
Because without a knowledge of it, it would be a mysterious and unpredictable force, and future applications would not be possible.
Yes, it is possible for a force to change the direction of motion of an object without changing its speed. This occurs when the force acts perpendicular to the velocity of the object, causing it to move in a curved path rather than speeding up or slowing down.
In physics, a single force can be composed of multiple individual forces acting in different directions. For example, a net force on an object is the vector sum of all the individual forces acting on it. So while a single force can be the result of multiple components, it is not possible for a single isolated force to exist without any other forces present.
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