can a particle be acclerated:-

a) if its speed is constant.

b) if its velocity is constant.

Give Reason.

 a )
Yes ,a particle can be accelerated when it is moving with constant speed.
When a point object is moving on a horizontal circular path with a constant speed,the direction of its velocity vector at an instant is changing with time.It means in a uniform circular motion velocity vector of the object is changing with time.

b) No, if a body is travelling with constant velocity then it can not acclerate.
Because Acceleration = Change in velocity / time . As change in velocity is zero ,so acceleration is also zero.


 

  • 20

I don't think so because acceleration is the change in velocity

  • -6
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