Question

At the turning point of an object,

only the instantaneous velocity is zero.
only the acceleration is zero.
both the instantaneous velocity and the acceleration are zero.
neither the instantaneous velocity nor the acceleration is zero

Answer 1

Only the instantaneous velocity is zero.

Step-by-step explanation:

At the turning point of an object, its acceleration changes as the velocity changes. Change in velocity leads to produce acceleration. The acceleration that is acting on the object at the turning point is centripetal acceleration which is given by :

`a=(v^2)/(r)`, r is the radius of circular path

So, at the turning point of an object only the instantaneous velocity is equal to zero. Hence, the correct option is (a).