
Forces in physics and Newton’s law of mechanics
Quiz by Sorawit Lappisatepun
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10 questions
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- Q1According to Newton's second law of motion, what is the relationship between force, mass, and acceleration?Force equals mass divided by accelerationForce equals mass times accelerationForce equals mass minus accelerationForce equals mass plus acceleration30s
- Q2What does Newton's first law of motion state about an object at rest?An object at rest can only be moved by a force equal to its massAn object at rest stays at rest unless acted upon by a net external forceAn object at rest will start moving on its ownAn object at rest will eventually move due to gravity30s
- Q3Which of the following best describes the concept of inertia?The acceleration of an object in motionThe gravitational pull on an objectThe force required to move an objectThe tendency of an object to resist changes in its state of motion30s
- Q4According to Newton's third law of motion, what happens when an object exerts a force on another object?The first object will exert a greater force on the second objectThe second object exerts an equal and opposite force on the first objectThe second object's force will be greater than the first object's forceThe first object will move while the second object stays stationary30s
- Q5If a 5 kg object is accelerating at a rate of 2 m/s², what is the net force acting on it according to Newton's second law?7 N2 N5 N10 N30s
- Q6What is the unit of force in the International System of Units (SI)?NewtonJoulePascalWatt30s
- Q7If an object is in free fall, what is the only force acting on it, neglecting air resistance?FrictionGravityBuoyancyTension30s
- Q8What does the term 'net force' refer to in physics?The gravitational force acting on an objectThe force required to start moving an object from restThe force opposing motion, such as frictionThe total force acting on an object, considering all applied forces30s
- Q9When two equal and opposite forces act on an object, what is the resulting effect on the object's motion?The object acceleratesThe object changes directionThe object gains speedThe object remains in its state of motion30s
- Q10If a car is moving with a constant velocity, what can be said about the forces acting on it?The car is experiencing a strong friction forceThe car is gaining speedThe net force acting on the car is zeroThe car is accelerating30s