Newton’s first law of motion states that a body at rest will remain at rest position only and abody which is in motion continues to be in motion unless otherwise they are acted upon by anexternal force. In other words, all objects resist a changein their state of motion. In a qualitativeway, the tendency of undisturbed objects to stayat rest or to keep moving with the same velocityis called inertia. This is why, the firstlaw of motion is also known as the law of inertia. Answerthe following questions.1. Why Newton’s first law of motion is called law of inertia?2. Differentiate between balanced and unbalanced force.3. State second law of motion. State whether it is scalar or vector quantity4. Even though the action and reaction forces are always equal in magnitude; these forces maynot produce accelerations of equal magnitudes. Give your justification on this statement.
Question
Newton’s first law of motion states that a body at rest will remain at rest position only and abody which is in motion continues to be in motion unless otherwise they are acted upon by anexternal force. In other words, all objects resist a changein their state of motion. In a qualitativeway, the tendency of undisturbed objects to stayat rest or to keep moving with the same velocityis called inertia. This is why, the firstlaw of motion is also known as the law of inertia. Answerthe following questions.1. Why Newton’s first law of motion is called law of inertia?2. Differentiate between balanced and unbalanced force.3. State second law of motion. State whether it is scalar or vector quantity4. Even though the action and reaction forces are always equal in magnitude; these forces maynot produce accelerations of equal magnitudes. Give your justification on this statement.
Solution
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Newton's first law of motion is called the law of inertia because it describes the concept of inertia - the tendency of an object to resist changes in its state of motion. According to this law, an object at rest tends to stay at rest, and an object in motion tends to stay in motion, unless acted upon by an external force.
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Balanced forces are those that result in a net force of zero, meaning they do not cause a change in motion. They are equal in size and opposite in direction. On the other hand, unbalanced forces do not cancel each other out, resulting in a net force that can cause a change in the object's motion.
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Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. The direction of the acceleration is in the direction of the net force. It involves both magnitude and direction, so it is a vector quantity.
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The statement is correct because the acceleration produced by a force depends not only on the magnitude of the force but also on the mass of the object on which the force is acting. According to Newton's second law, acceleration is equal to the force applied divided by the mass of the object. So, even if the action and reaction forces are equal in magnitude, if they are acting on objects of different masses, they will produce different accelerations.
Similar Questions
Describe the concept of inertia in terms of Newton's First Law of Motion.
The second law of motion states that1 pointto every action there is an equal and opposite reactiona body will continue to be at rest or in motion unless and external force is applied to itif the external force acting on a system of bodies is zero, then the momentum of the system remains constantthe force applied to an object is directly proportional to the mass of the object and the acceleration.
The law of inertia states that on object...Group of answer choiceswill continue moving in a straight line unless an outside force acts on itwill continue moving at the same velocity unless an outside force acts on itat rest will stay at rest unless acted on by an outside forceall of these
What does Newton’s first law state?The acceleration of an object is proportional to the resultant force which is acting on it and inversely proportional to its (inertial) massIf the resultant force acting on an object is zero, then it will remain at rest or will continue to move (in a straight line) at a constant velocity (in other words, its acceleration will be zero)When one object exerts a force on another, the second object will exert an equal and opposite force on the firstAn object will accelerate if there is a resultant force acting on it2Which of the following statements is NOT part of Newton’s second law?An object will accelerate if there is a resultant force acting on itThe acceleration of an object is proportional to the resultant force which is acting on itThe acceleration of an object is inversely proportional to its (inertial) massThe acceleration of an object is defined as its rate of change of velocity3What does Newton’s third law state?An object will accelerate if there is a resultant force acting on itThe acceleration of an object is proportional to the resultant force which is acting on it and inversely proportional to its (inertial) massIf the resultant force acting on an object is zero, then it will remain at rest or will continue to move (in a straight line) at a constant velocity (in other words, its acceleration will be zero)When one object exerts a force on another, the second object will exert an equal and opposite force on the first4In a pinball machine, a pinball of mass 50 grams is accelerating at 20 metres per second squared. Calculate the resultant force which is acting on it at this time.1,000 N400 N0.0025 N1 N5A rocket of mass 10,000 kg is being launched vertically upwards. The total thrust force from its engines is equal to 140 kN. Calculate its acceleration. Take the gravitational field strength to be 10 N/kg.14 m/s20.7 m/s24.0 m/s210 m/s26Amir is investigating how the acceleration of an object is affected by the resultant force which is acting on it. Name the independent variable in this investigation.The mass of the objectThe distance through which the object travelsThe acceleration of the objectThe resultant force which is acting on the object
Which of the following choices best describes Newton's Second Law of Motion?Group of answer choicesA body in motion tends to stay in motion, a body at rest tends to stay at rest.The net force is equal to the mass of the object divided by the accelerationThe acceleration of an object is equal to the net force multiplied by the mass of the objectThe net force is equal to the mass of the object multiplied by the acceleration of the object.
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