Question

12. If a particle executes uniform circular motion, choose the correct statement (NEET 2016)
(a) The velocity and speed are constant.
(b) The acceleration and speed are constant.
(c) The velocity and acceleration are constant.
(d) The speed and magnitude of acceleration are constant.
In my opinion the correct answer is (b) The acceleration and speed are constant.This is because changing velocity need not imply changing acceleration.constant acceleration means rate of change of velocity is constant.In circular motion rate of change of vel is constant.Hence accel,eration is constant besides speed

Answer 1

yes! b is the the right answer

because velocity is vector quantity

so vector have direction and magnitude

so the answer is "b"

Answer 2

In my opinion when a object is moving in uniform circular motion the speed is constant but the velocity keep on changing due to the change in direction

of the body

I think D option is correct because only velocity and acceleration can be a variable quantity but the speed and magnitude are constant

hope u get it

Which class question?????

pls tell me in the comment section