can u answer this please tomorrow's my exam
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4173stkabirdin:
I don't have much time to answer all but you should keep more points for such big questions and quick answers
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1.In physics, a force is any interaction that, when unopposed, will change the motion of an object.
2.Balanced forces do not cause a change in motion. When balanced forces act on an object at rest, the object will not move. If you push against a wall, the wall pushes back with an equal but opposite force. ...Forces that cause a change in the motion of an object are unbalanced forces.
3.I. Frictional force
As an object moves across a surface it causes friction. Friction force can be sliding or static. Friction depends upon the nature of the two interacting surfaces. Example: A book sliding on the table, a ball rolling on the floor.
II. Tension force
A force that is transmitted through a string, rope, cable or wire when it is pulled tightly by the object on the opposite end is a tension force. This force flows across the length of the wire or rope. Example- A cable car or climbing a mountain using a rope.
III. Normal force
This is the force exerted upon an object that is in contact with another stable object. Usually a normal force is applied horizontally between two objects in contact. Example-A book resting on a table or a person leaning on the wall.
IV. Air Resistance force
This a frictional force applied on objects when they are in air. Often the Air Resistance force opposes the movement of the object. It is noticeable for objects that travel at high speed up in the air. Example- An airplane or a parachute.
V. Applied force
A force with which an object has been pushed or pulled. Here a force is applied to an object by a person or any other object. Example- A person pushing a chair to the other side of the room
VI. Spring force
It is the force which results when a spring is stretched or compressed. A spring is a metal elastic device that returns to its original form when pulled or pressed. If the spring is stretched, spring force is attractive. If it is compressed, spring force is repulsive. Example- Trampoline, diving board etc.
2. Action at a distance forces
These types of forces happen when two interactive objects are not in physical contact with each other; yet they are able to push or pull. Types of Action at a distance forces are: Gravitational force, Electrical force and Magnetic forces.
I. Gravitational force
This is the force by which the Earth or moon or other massively huge objects attract another object towards them. All objects on the Earth experience the gravitational force, which is directed downwards towards the center of the earth. The force of gravity is always equal to the weight of the object.
II. Electrical force
It is one of the fundamental forces of the Universe. It is a force that exists between all charged particles. It is all around us. It is responsible for making our hair stand on a cold day. When the hair on the head stands and refuses to be brushed, that is static energy. It is this force which allows you to see when you turn on the lamp in a dark room.
III. Magnetic force
This is a push or pull exerted by a magnet. The force of attraction between an object and a magnet is called magnetism. All magnets have north and south poles. This force is the attraction or repulsion that arises between electrically charged particles due to their motion. Example- Iron nails when placed near a magnet
4.The focus of Lesson 1 is Newton's first law of motion - sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motionstays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
5.One's body movement to the side when a car makes a sharp turn. Tightening of seat belts in a car when it stops quickly. A ball rolling down a hill will continue to roll unless friction or another force stops it.
6.the physical force that keeps things where they are or keeps them moving in the direction they are travelling
7.??
8.motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.
9.Momentum is a physics term; it refers to the quantity of motion that an object has
10. In SI units, if the mass is in kilograms and the velocity is in meters per secondthen the momentum is in kilogram meters per second (kg⋅m/s).
11.
2.Balanced forces do not cause a change in motion. When balanced forces act on an object at rest, the object will not move. If you push against a wall, the wall pushes back with an equal but opposite force. ...Forces that cause a change in the motion of an object are unbalanced forces.
3.I. Frictional force
As an object moves across a surface it causes friction. Friction force can be sliding or static. Friction depends upon the nature of the two interacting surfaces. Example: A book sliding on the table, a ball rolling on the floor.
II. Tension force
A force that is transmitted through a string, rope, cable or wire when it is pulled tightly by the object on the opposite end is a tension force. This force flows across the length of the wire or rope. Example- A cable car or climbing a mountain using a rope.
III. Normal force
This is the force exerted upon an object that is in contact with another stable object. Usually a normal force is applied horizontally between two objects in contact. Example-A book resting on a table or a person leaning on the wall.
IV. Air Resistance force
This a frictional force applied on objects when they are in air. Often the Air Resistance force opposes the movement of the object. It is noticeable for objects that travel at high speed up in the air. Example- An airplane or a parachute.
V. Applied force
A force with which an object has been pushed or pulled. Here a force is applied to an object by a person or any other object. Example- A person pushing a chair to the other side of the room
VI. Spring force
It is the force which results when a spring is stretched or compressed. A spring is a metal elastic device that returns to its original form when pulled or pressed. If the spring is stretched, spring force is attractive. If it is compressed, spring force is repulsive. Example- Trampoline, diving board etc.
2. Action at a distance forces
These types of forces happen when two interactive objects are not in physical contact with each other; yet they are able to push or pull. Types of Action at a distance forces are: Gravitational force, Electrical force and Magnetic forces.
I. Gravitational force
This is the force by which the Earth or moon or other massively huge objects attract another object towards them. All objects on the Earth experience the gravitational force, which is directed downwards towards the center of the earth. The force of gravity is always equal to the weight of the object.
II. Electrical force
It is one of the fundamental forces of the Universe. It is a force that exists between all charged particles. It is all around us. It is responsible for making our hair stand on a cold day. When the hair on the head stands and refuses to be brushed, that is static energy. It is this force which allows you to see when you turn on the lamp in a dark room.
III. Magnetic force
This is a push or pull exerted by a magnet. The force of attraction between an object and a magnet is called magnetism. All magnets have north and south poles. This force is the attraction or repulsion that arises between electrically charged particles due to their motion. Example- Iron nails when placed near a magnet
4.The focus of Lesson 1 is Newton's first law of motion - sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motionstays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
5.One's body movement to the side when a car makes a sharp turn. Tightening of seat belts in a car when it stops quickly. A ball rolling down a hill will continue to roll unless friction or another force stops it.
6.the physical force that keeps things where they are or keeps them moving in the direction they are travelling
7.??
8.motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.
9.Momentum is a physics term; it refers to the quantity of motion that an object has
10. In SI units, if the mass is in kilograms and the velocity is in meters per secondthen the momentum is in kilogram meters per second (kg⋅m/s).
11.
Wohhhhhh so much efforts
Good thing
thanks
but it's not enough i forgotted to answer leftover questions
It happens but this also helps
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14 . when a swimmer swims his hands apply action force in the backward direction and the river applies reaction force in forward direction
16.a/q to law of conservation of momentum when two or more bodies qct on each other and no external force acts on them , the final or total momentum of all bodies is equal to initial momentum
17. effects on force
force can stop a moving body
force can make a movjng body stop
force can change the direction of a moving body
force can change the shape and size of moving body
sorry i didnt ans 15 no i m having my exams tommorow i dont hav much time (
hope helped!!!
16.a/q to law of conservation of momentum when two or more bodies qct on each other and no external force acts on them , the final or total momentum of all bodies is equal to initial momentum
17. effects on force
force can stop a moving body
force can make a movjng body stop
force can change the direction of a moving body
force can change the shape and size of moving body
sorry i didnt ans 15 no i m having my exams tommorow i dont hav much time (
hope helped!!!
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