After half circle the given particle will reach the point opposite to the diameter i.e. from point “A” to point “B” (r + r = 2r {diameter}). And we know that displacement is the shortest path between starting and ending ...

The property of an object to resist any change in its state of motion or rest is called inertia. If an object is at rest, then it tends to remain at rest is called inertia of rest and if the ...

For an object moving along a straight path in an accelerated motion, it is not necessary that it always goes away from the earth.