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When acceleration upward or downward direction is taken positivw or negative?
If it is gravitational acceleration then it it is positive in downward and negative in upward direction..if it is not gravitational acceleration then it is depending upon the value of acceleration.
Difference between negative and positive acceration?
Positive acceleration ==> speeding up Negative acceleration ==> slowing down
What is the gravitational force acting upon an astronaut when lifting off?
The actual gravitational force on the astronaut ... the force attracting him to themass of the earth ... is exactly the same as it always is, and is equal to his weight.But ... he feels as if there's more force on him, as if his weight has increased.That's because he's accelerating aboard the launch vehicle, and there's no wayto tell the difference between the force of gravity and the force of acceleration.
When is acceleration constant?
constant acceleration is when you gain the same speed over the same time
Why would acceleration be affected by angle of inclination?
Acceleration is affected by the angle of inclination due to the component of gravitational force acting parallel to the surface. As the angle increases, a larger portion of the gravitational force contributes to accelerating an object down the slope. Conversely, at smaller angles, less gravitational force acts parallel to the incline, resulting in lower acceleration. Thus, the steeper the incline, the greater the acceleration experienced by an object moving down it.
