give one example of acceleration is against the direction of motion?
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Accepted Answer: a. Acceleration is in the direction of motion, when you are increasing the speed of the car moving along a straight line. ... Acceleration is against the direction of motion, when brakes are applied to the car in motion.
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In Example A, the object is moving in the positive direction (i.e., has a positive velocity) and is speeding up. When an object is speeding up, the acceleration is in the same direction as the velocity.
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Answer and Explanation: You can have a non-zero acceleration and zero velocity each time the object changes its direction of motion, for...
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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.
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The Direction of the Acceleration Vector. Since acceleration is a vector quantity, it has a direction associated with it. The direction of the acceleration vector depends on two things: whether the object is speeding up or slowing down. whether the object is moving in the + or - direction.
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That means that the direction of the acceleration determines whether you will be adding to or subtracting from the velocity. Mathematically, a negative acceleration means you will subtract from the current value of the velocity, and a positive acceleration means you will add to the current value of the velocity.
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Accelerations are caused by an unbalanced or net force. The net force is always in the same direction as the acceleration. For objects moving in circles at constant speed, the net force is directed towards the center of the circle about which the object moves.
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Uniform Acceleration Equations One of the common examples of uniformly accelerated motion is freely falling bodies. The only acceleration which is acting on the body is g (acceleration due to gravity).
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An object undergoing uniform circular motion is moving with a constant speed. Nonetheless, it is accelerating due to its change in direction. The direction of the acceleration is inwards. The animation at the right depicts this by means of a vector arrow.
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Observe that the object below moves in the positive direction with a changing velocity. An object which moves in the positive direction has a positive velocity. If the object is speeding up, then its acceleration vector is directed in the same direction as its motion (in this case, a positive acceleration).
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Yes a body can definitely have acceleration if it is moving with constant speed. ... It's speed is constant but it has varying velocity as it changes it's direction, so there is always a acceleration acting towards centre which is provided by centripetal force.
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Acceleration is a vector in the same direction as the change in velocity, Δv. Since velocity is a vector, it can change either in magnitude or in direction. ... When an object slows down, its acceleration is opposite to the direction of its motion. This is known as deceleration.
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The Direction of the Acceleration Vector. Since acceleration is a vector quantity, it has a direction associated with it. The direction of the acceleration vector depends on two things: whether the object is speeding up or slowing down.
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An object which experiences either a change in the magnitude or the direction of the velocity vector can be said to be accelerating. This explains why an object moving in a circle at constant speed can be said to accelerate - the direction of the velocity changes. 3.
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Velocity and acceleration are vector quantities, so they have both magnitude and direction. If the speed of an object remains the same but it changes direction, then the object is accelerating.
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Because acceleration has both a magnitude and a direction, it is a vector quantity. Velocity is also a vector quantity. Acceleration is defined as the change in the velocity vector in a time interval, divided by the time interval.
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According to our principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity. Thus, this object has a negative acceleration. In Example D, the object is moving in the negative direction (i.e., has a negative velocity) and is speeding up.