Kinematics Reasonings

Can an object have velocity and acceleration in perpendicular directions?

Yes. In the circular motion of a body, the velocity is tangential to the circle but the force and acceleration will be along the radius towards the centre. Since the radius and tangent are normal to each other, velocity and acceleration are perpendicular.

Circular Motion of a Body [Velocity and Acceleration Perpendicular to each other]

Also, when an object is thrown by making an angle with horizontal [Projectile Motion], at the highest point, the velocity is directed horizontally. But due to gravitational force, the object has acceleration due to gravity in vertically downward direction. So, at that instant, velocity and acceleration are in perpendicular directions.

[Read: Motion in a Straight Line]


Is it possible that the displacement of a body is zero but not the distance?

Is it necessary that the average speed and velocity be equal?

Can a body have a constant velocity but varying speed?

The velocity of a body will be changed in magnitude and direction while its acceleration is constant. Is it possible?

Is it possible for a body to have a constant speed in an accelerating motion?

Why does a person sitting in one train think that the other train is at rest when both the trains are moving on parallel tracks with the same speed and in the same direction?