SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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increasing speed
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decreasing speed
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changing direction
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all of the above
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Detailed explanation-1: -Acceleration is defined as. The rate of change of velocity with respect to time. Acceleration is a vector quantity as it has both magnitude and direction. It is also the second derivative of position with respect to time or it is the first derivative of velocity with respect to time.
Detailed explanation-2: -There are three types of accelerated motions : uniform acceleration, non-uniform acceleration and average acceleration.
Detailed explanation-3: -But an object that is slowing down is also accelerating. Remember that acceleration is a change in speed. A car that is slowing down is decreasing its speed. It is also accelerating, because its speed is changing.
Detailed explanation-4: -Acceleration has to do with changing how fast an object is moving. If an object is not changing its velocity, then the object is not accelerating. The data at the right are representative of a northward-moving accelerating object. The velocity is changing over the course of time.