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

Multiple choice

work / time =

  1. energy

  2. power

  3. force

  4. density
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Power is defined as the rate at which work is done, calculated as work divided by time.

Multiple choice

stopping distance =

  1. deceleration x force x height

  2. thinking + braking

  3. Thinking x stopping

  4. braking x thinking
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Stopping distance is the sum of the thinking distance (distance traveled during reaction time) and the braking distance.

Multiple choice

Pressure =

  1. this quiz

  2. area/force

  3. Force/area

  4. Pascal/Nm
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pressure is defined as the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

Multiple choice

Newton's Second law is....

  1. Objects stay at rest/constant motion until a force acts

  2. Every force has an equal and opposite reaction

  3. Acceleration of directly proportional to the net force

  4. F=ma
Reveal answer Fill a bubble to check yourself
C Correct answer
Multiple choice

Anticlockwise Moments =

  1. Downwards moments

  2. Clockwise moments

  3. Total force

  4. Niall
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to the principle of moments, for an object to be in equilibrium, the sum of clockwise moments must equal the sum of anticlockwise moments.

Multiple choice

which of these statements are false

  1. slope is run over rise

  2. speed is distance over time

  3. mechanical energy is the sum of potential and kinetic energy

  4. this is a quiz on science
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The slope of a line is defined as rise over run, not run over rise. Therefore, the statement that slope is run over rise is false.

Multiple choice

what is gravitational potential energy

  1. the energy that an object has due to its motion

  2. the energy of gravity that depends on weight and hight

  3. the energy of gravity that depends on weight only

  4. the energy of gravity that depends on height only
Reveal answer Fill a bubble to check yourself
D Correct answer
Multiple choice

What does not change velocity?

  1. Changing direction

  2. Changing speed

  3. Changing speed and direcetion

  4. How far you travel
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Velocity is a vector quantity involving both speed and direction. How far you travel (distance) is a scalar and does not inherently change the velocity vector.

Multiple choice

When are objects in motion?

  1. If it changes position relative to a moving object

  2. If it changes position relative to a reference point

  3. If the object has energy

  4. Speed=Distance over time
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Motion is defined as a change in position relative to a fixed reference point. If an object's position does not change relative to that point, it is considered at rest.

Multiple choice

What is a force?

  1. Push

  2. Pull

  3. push or pull

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In physics, a force is defined as a push or a pull upon an object resulting from the object's interaction with another object.

Multiple choice

Energy of motion is which type of energy?

  1. Potential

  2. Kinetic

  3. Sound

  4. Gravititional
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Kinetic energy is the energy of motion. Potential energy is stored energy, and gravitational energy is a form of potential energy.