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Title: Can A body have zero velocity and be accelerating? Post by: bugel2000 on Feb 4, 2013 Follow up questions:
Can a body have a constant speed and changing velocity? Can a body have constant velocity and changing speed?"WHY"? Title: Can A body have zero velocity and be accelerating? Post by: rizkallah15 on Feb 4, 2013 First question: Yes. Otherwise, if something is not moving, then it will never be able to move. :)
second question: Yes. Speed is just a number, whereas velocity has a direction too. So if something is going around in a circle, it has a constant speed but its velocity is changing. Third: No. Reading the explanation to the second answer will tell you that. Title: Can A body have zero velocity and be accelerating? Post by: nursing1 on Feb 4, 2013 To the first question: Not for long. Acceleration is change in velocity, so even if velocity is zero at some point, if acceleration is not zero, it has to change. So there can be a momentary condition of zero velocity and finite acceleration
Velocity is a vector and speed is a scalar. Speed is the magnitude of the velocity vector. The magnitude of a vector (speed) can be constant, but the vector can change (direction). However, if the magnitude (speed) of a vector is changing, there is no way for the vector (velocity) to be constant.. Title: Can A body have zero velocity and be accelerating? Post by: julia.k18 on Feb 4, 2013 "There are no boundaries."
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