Question

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Answer 1

Answer:

1. Effects of Force. A force acting on an object causes the object to change its shape or size, to start moving, to stop moving, to accelerate or decelerate.
2. Balanced forces is a system of forces which gives zero as the vector sum. Examples of this system are the following: >> a book lying motionless at the top of a table — The force of gravity is balanced by the normal force of the table. The force of the light wind from an electric fan is balanced by friction.                                                        Any two forces acting on each other, which are not equal and opposite ( thereby causing motion ) are unbalanced forces. For example, when you push a wall with a force, neither you nor the wall moves. The wall applies an equal amount of force in the opposite direction
3. Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.                        the normal force is one component of the contact force between two objects, acting perpendicular to their interface. The frictional force is the other component; it is in a direction parallel to the plane of the interface between objects. Friction always acts to oppose any relative motion between surfaces.
4. first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia. ... And if an additional external force is applied, the velocity will change because of the force.                                                                                                                              The motion of a ball falling down through the atmosphere, or a model rocket being launched up into the atmosphere are both examples of Newton's first law.
5. Inertia is that quantity which depends solely upon mass. The more mass, the more inertia. Momentum is another quantity in Physics which depends on both mass and speed.

Explanation: