Ejaculation.
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if the force applied on a body makes a body move that is there is a displacement of the point of application of force in the direction of force then work is said to be done by the body
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Force is that which changes, or tends to change, a state of rest or uniform motion of a body. Brent
Force is an external effort and If the resultant of all force acting on a body is zero, then the forces are known as balanced force . Balanced forces do not change the speed.
Net force is defined as the overall force acting on an object. When a cat sleeps on a table, the net force on it is zero. When a body is at rest the net force acting on the body is zero.
Force is defined as the one which changes or tends to change the state of rest or of uniform motion of a body along a straight line.
Work is transferred energy that results when a force is applied to a body causing it to be displaced along the line of force.
For a force to do work on a body, the force must cause the body to move in the direction of the force. Work is defined as the product of the force applied and the distance over which the force is applied in the direction of the force.
The inertia of a body can be defined as the relunctance of a body to acceleration. The mass of a body can be defined as a measure of the inertia of a body. This is because acceleration = resultant force / mass. So, if mass is greater, the less will be the acceleration of the body and hence the greater the inertia.
Weight is the force that gravity exerts upon a body in direct proportion to its mass.
As new sperm are made in the body, there is no shortage of them in the body.