GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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TRUE
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FALSE
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Either A or B
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None of the above
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Detailed explanation-1: -For example, if a car turns a corner at constant speed, it is accelerating because its direction is changing. The quicker you turn, the greater the acceleration. So there is an acceleration when velocity changes either in magnitude (an increase or decrease in speed) or in direction, or both.
Detailed explanation-2: -No. For example, the car could be traveling at constant speed around a corner. In this case it‘s direction is changing and therefore it‘s velocity is changing. 2.
Detailed explanation-3: -Can an object accelerate if it’s moving with constant speed? Yup! Many people find this counter-intuitive at first because they forget that changes in the direction of motion of an object-even if the object is maintaining a constant speed-still count as acceleration.