Simple question about velocity/acceleration

[emma402]

Can an object be moving when its acceleration is zero?
-it can for any length in time, correct?

And can an object be accelerating when its velocity is zero?
-it can, but only for one moment in time, correct?

 

[PhanthomJay]

Yes and Yes.

 

[emma402]

Jay can you look at my two other my recent post about ball acceleration/velocity and velocity of a ball please?

 

[Phy.man]

for 1st question certainly yes..any thing consisting constant velocity has 0 acceleration..

And for second ques...well...i think its not possible

 

[the_storm]

for 1st question certainly yes..any thing consisting constant velocity has 0 acceleration..

And for second ques...well...i think its not possible

I think the 3st question and the second are correct
the first one when an object moving with constant velocity so it's acceleration is 0
the second question occurs in many cases for example when an object moving in the +ve x direction and its acceleration is negative so that means it is decelerating at a moment when he object changes direction the velocity will be zero and the acceleration will still constant

best regards :)

 

[Phy.man]

the second question occurs in
many cases for example when
an object moving in the +ve x
direction and its acceleration is
negative so that means it is
decelerating at a moment when
he object changes direction the
velocity will be zero and the
acceleration will still constant
best regards :)
how can a decelerating object have a constant acc?

 

[the_storm]

how can a decelerating object have a constant acc?

when it's initial velocity is positive and its acceleration is negative or vies versa.