Physics · Science General
Newtonian Mechanics and Forces
1,559 Questions
Newtonian mechanics studies the motion of objects and the physical laws governing them. This hub covers friction, gravitational force, inertia, and vector quantities. Mastering these fundamental physics concepts is essential for various government competitive exams.
Laws of motionFriction and inertiaVector and scalar quantitiesGravitational accelerationArchimedes principle
Newtonian Mechanics and Forces Questions
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slides under
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slides past
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pushes into
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pulls apart
B
Correct answer
Explanation
At a transform fault, tectonic plates slide horizontally past one another. This lateral movement causes friction and earthquakes, such as along the San Andreas Fault, but does not create or destroy crust. Pushing into each other occurs at convergent boundaries, while pulling apart occurs at divergent boundaries.
B
Correct answer
Explanation
Energy is defined as the capacity to do work, which includes causing motion or change. It is not defined as the ability to stop things from moving.
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the hose pushing in the opposite direction from the water
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water traveling forward
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the men holding on to the hose
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there is no reaction force
A
Correct answer
Explanation
According to Newton's Third Law, for every action, there is an equal and opposite reaction. The water moving forward exerts a force on the hose in the opposite direction.
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not move if it is not moving
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wants to continue doing what it is doing
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continue traveling straight unless an outer force acts on it
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all answers are correct
D
Correct answer
Explanation
The law of inertia (Newton's First Law) states that an object will maintain its state of motion (at rest or constant velocity) unless acted upon by an external force.
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The object will speed up the entire time and will not stop
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The object will stay at a constant speed the entire time
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The object will slow down the entire time to eventually stop
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The object will stay at constant speed and then slow down
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a force perpendicular to the pulling force
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a force that can create heat
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a force in the same direction to the object's motion
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a force opposite to the object's motion
D
Correct answer
Explanation
Friction is a force that opposes the relative motion of two surfaces in contact.
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all forces acting on the object are balanced
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the net force does NOT equal zero
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the upward force is different than the downward force
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will fall down eventually
A
Correct answer
Explanation
Equilibrium occurs when the vector sum of all forces acting on an object is zero. This means the forces are balanced, resulting in no acceleration.
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The object speeds up
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The object slows down
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The object continues to travel at constant speed
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The object will slow down to a stop
C
Correct answer
Explanation
According to Newton's First Law, an object with a net force of zero will maintain its state of motion. If it is already moving, it will continue at a constant velocity (speed and direction).
B
Correct answer
Explanation
Mass is a measure of the amount of matter in an object and is constant regardless of location or gravity. Weight, however, is a measure of the gravitational force on an object and changes based on location.
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Energy
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Chemistry
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Bipedal
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Cohesion
A
Correct answer
Explanation
Energy is defined in physics as the capacity to perform work. The other terms are unrelated scientific concepts.
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mass
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volume
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energy
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friction
A
Correct answer
Explanation
Density is defined as mass per unit volume. A substance is denser if it has more mass packed into the same amount of space.
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Mass
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Weight
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Inertia
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Volume
D
Correct answer
Explanation
Volume is the measure of the amount of space an object occupies. Mass is the amount of matter, and weight is the force of gravity on that mass.
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Feedback Effect
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Focal Mechanism
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Epicenter
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Acceleration
A
Correct answer
Explanation
A feedback effect occurs when a change in a system leads to further changes that either amplify (positive feedback) or dampen (negative feedback) the original disturbance.
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physical state
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height
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volume
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weight
D
Correct answer
Explanation
Weight is defined as the force exerted on an object due to gravity. It is calculated as mass multiplied by the acceleration due to gravity.
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pressure
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annoying
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physical change
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cohesion
A
Correct answer
Explanation
Pressure is defined as the amount of force applied perpendicular to the surface of an object per unit area. While the question is simplified, pressure is the correct physical term for force applied to an area.