when velocity is positive and acceleration is negative what happens to the objects motion?
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An object which moves in the positive direction has a positive velocity. If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion (in this case, a negative acceleration).
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An object which moves in the negative direction has a negative velocity. If the object is speeding up then its acceleration vector is directed in the same direction as its motion (in this case, a negative acceleration).
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The car is also decelerating: the direction of its acceleration is opposite to its direction of motion. (c) This car is moving toward the left, but slowing down over time. Therefore, its acceleration is positive in our coordinate system because it is toward the right.
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If a particle is moving with a uniform velocity . Then it's acceleration is Zero . Acceleration is defined as the rate of change in velocity. If the velocity is uniform, this implies that it is not changing.
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And it's not zero, it's -9.8m/s/s, as you acknowledge, so the direction of acceleration is meaningful. The no math answer to this one is to realize that acceleration is the rate of change of velocity. At the top most point, the velocity is indeed zero.
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If you follow the disappearance of something, the velocity should be "negative" and hence you need to invert it to get a positive reaction velocity. Only when the reaction rate is positive will you find both Michaelis-Menten parameters to be positive.
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Acceleration is defines as the change in velocity per unit time. If object is moving with uniform velocity, its velocity is constant, that means final and initial velocity are same.. so acceleration will be 0.
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Average velocity indicates direction and can be represented as a negative number when the displacement is in the negative direction. Average speed does not indicate direction and can only be positive or zero.
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Objects that are accelerating (speeding up) will have a positive slope on a speed vs. time graph, while objects that are decelerating (slowing down) will have a negative slope. You can also identify when an object has a larger or smaller acceleration using a speed vs.
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Acceleration is a vector quantity because it has both magnitude and direction. When an object has a positive acceleration, the acceleration occurs in the same direction as the movement of the object.
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Velocity includes both speed and direction of motion. Acceleration is a change in velocity. Velocity changes when either the speed, the direction, or both the speed and the direction change.
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In the figure below, both cars are accelerating because their speeds are changing. When a car's acceleration and velocity are in the same direction, the speed increases and the acceleration is positive. ... When a car is slowing down, the acceleration and velocity are in opposite directions. The acceleration is negative.
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A positive sign of acceleration will reduce the magnitude of a negative velocity since a positive acceleration will increase the value of the...
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what is the acceleration of a body moving with constant velocity? Acceleration is zero when the body is moving with a constant velocity.
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Acceleration: The rate of change in the velocity of an object per unit time is referred as acceleration and the kind of motion is known as accelerated motion. The acceleration is positive when it is in the direction of velocity and negative when it is opposite to the direction of velocity.
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The acceleration of a body is defined as the rate of change of its velocity. ... If its velocity is constant, the velocity is not changing at all, so the acceleration is zero.
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The acceleration due to gravity is ALWAYS negative. Any object affected only by gravity (a projectile or an object in free fall) has an acceleration of -9.81 m/s2, regardless of the direction. The acceleration is negative when going up because the speed is decreasing.