Yes, the velocity of the object can reverse direction when its acceleration is constant. For example consider that the velocity of any object at any time t is given as: v(t) = t – 2. At At t = 0 sec, the magnitude of velocity is 2m/s and is moving in the forward direction i.e.v (t) = -2.

Also to know is, why does acceleration decrease as speed increases? An acceleration can cause speed to increase, decrease, and even stay the same! Acceleration tells you the rate at which the velocity is changing. Because the velocity is a vector, you have to consider the changes to its magnitude and direction.

Is it possible for an object’s velocity to increase while its acceleration decreases? No, this is impossible because of the way in which acceleration is defined. No, because if acceleration is decreasing the object will be slowing down. No, because velocity and acceleration must always be in the same direction.

Yes, an object can have zero velocity and still be accelerating simultaneously. Let us consider an object moving in the forward direction. Now, suddenly a force acts on it and tries to accelerate the object in the reversed direction.

For the most part velocity is not zero if an object is accelerating. Since acceleration is the change in velocity over time, there has to be a change in velocity for something to accelerate. If the velocity is constant however, the acceleration is zero (because the velocity isn’t changing over time).

The maximum displacement of the bob from its mean position, i.e. OA or OB is called its amplitude. For this reason its velocity is maximum at the mean position. The bob is its highest point at either of its extreme positions. Here its potential energy is maximum while the kinetic energy is zero.

Maximum and Minimum velocity We know the velocity of a particle performing S.H.M. is given by, v = ± ω √a2 – x2. At mean position, x = 0. Therefore, v = ± ω √a2 – 02 = ± ω √a2 = ± aω. Therefore, at mean position, velocity of the particle performing S.H.M. is maximum which is Vmax = ± aω.