Physics ยท Science General
Newtonian Mechanics and Forces
1,605 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
B
Correct answer
Explanation
Kinetic energy is defined as the energy of motion for any object, not just living things. A car, a ball, or a rock can have kinetic energy if they are moving.
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potential energy
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kinetic energy
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thermal energy
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gravitational potential energy
B
Correct answer
Explanation
Kinetic energy is the standard scientific term for the energy an object possesses due to its motion.
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Enchanted Tales with Belle
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Peter Pan's Flight
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It's A Small World
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Mad Tea Party
D
Correct answer
Explanation
Centripetal force is the inward force required to keep an object moving in a circular path. The Mad Tea Party ride relies on this force as the teacups spin in circles.
C
Correct answer
Explanation
Inertia is the tendency of an object to resist changes in its state of motion. When a roller coaster changes direction or speed, your body's inertia causes you to continue moving in your previous direction, making you slide in your seat.
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Potential
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Kinetic
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Nuclear
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Chemical
A
Correct answer
Explanation
Potential energy is the energy stored in an object due to its position or configuration. In a roller coaster, the lift hill builds up gravitational potential energy that is later converted into kinetic energy.
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force
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energy
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power
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distance
C
Correct answer
Explanation
Power is defined as the rate at which work is done or energy is transferred.
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A soccer ball kicked with 2 N of force
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A soccer ball kicked with 5 N of force
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A soccer ball kicked with 1 N of force
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A soccer ball kicked with 7 N of force
D
Correct answer
Explanation
According to Newton's second law, a greater net force results in a greater acceleration (change in motion) for an object of constant mass.
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an equal & opposing force
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an unequal & opposing force
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an unequal, downward force
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an unequal, upward force
A
Correct answer
Explanation
If an object is subjected to an equal and opposing force, the net force is zero, resulting in no change in motion.
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unequal
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unbalanced
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balanced
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decreased
B
Correct answer
Explanation
When the net force is not zero, the forces acting on the object are considered unbalanced, which causes a change in motion.
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unequal
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unbalanced
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balanced
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decreased
C
Correct answer
Explanation
When the net force is 0, the forces acting on the object cancel each other out. This state is defined as balanced forces.
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total force
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inert force
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net force
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complete force
C
Correct answer
Explanation
The net force is the vector sum of all individual forces acting on an object. It represents the overall effect of these combined forces.
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a box getting pushed across the floor
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the north pole of a magnet repelling a south pole
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a sailboat cutting through the water
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an athlete kicking a soccer ball
B
Correct answer
Explanation
Magnetic force is a non-contact force that acts over a distance. Pushing, kicking, and cutting through water are all examples of contact forces.
A
Correct answer
Explanation
Forces like gravity, magnetism, and electricity can act on objects without physical contact. Therefore, the statement that they cannot is false.
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friction
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magnetism
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inertia
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gravity
A
Correct answer
Explanation
Friction is a force that occurs when two surfaces are in contact and moving (or attempting to move) relative to each other. Magnetism and gravity are non-contact forces.