Is it possiable that the velocity of a particle changes in magnitude and direction though the accceleration acting on it is constant in magnitude and direction?

Is it possible that the velocity of a particle is zero though it has still an acceleration ?

Give -the magnitude and direction of the net force acting on a kite skillfully held stationary in the sky,

Give -the magnitude and direction of the net force acting on a drop of rain falling down with a constant speed

Give -the magnitude and direction of the net force acting on a cork of mass 10 g floating on water,

Give -the magnitude and direction of the net force acting on a car moving with a constant velocity of 30 km/h on a rough road.

Can there be a two dimensional motion even though acceleration is present in only one direction?

What is centripetal acceleration? Find its magnitude and direction in case of circular uniform motion.

What is the direction of force of friction acting on a moving object?

A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of radius 80 m, he applies brakes and reduces his speed at the constant rate of 0.50 m/s every second. What is the magnitude and direction of the' net acceleration of the cyclist on the circular turn?

What are the magnitude and direction of the electric field at the centre of square in figure if q=1xx10^4 C and a = 5cm.