أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
As speed is a scalar quantity, direction of movement doesn’t affect it. But acceleration is a vector quantity as it is the rate of change of velocity which is itself a vector quantity.
So, take uniform circular motion as example,
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.
