Physics · 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

____ may push or pull something, making it move.

  1. Friction

  2. Speed

  3. Force

  4. Gravity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A force is defined as a push or a pull acting upon an object. Friction is a force that opposes motion, while speed is the rate at which an object covers distance.

Multiple choice

What type of quantity is momentum?

  1. Scalar quantity

  2. Vector quantity

  3. Both scalar and vector quantity

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

Momentum is defined as the product of mass and velocity. Since velocity is a vector quantity, momentum is also a vector quantity.

Multiple choice

Which force is responsible for the friction?

  1. Electromagnetic force <!--Session data-->

  2. Gravitational force <!--Session data-->

  3. Mechanical force <!--Session data-->

  4. None of these <!--Session data-->
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 

Multiple choice

What does the work done by a force depend on?

  1. The magnitude of the displacement

  2. The magnitude of the force

  3. The angle between the force and displacement

  4. All of above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Work done is defined as W = F * d * cos(theta), where F is force, d is displacement, and theta is the angle between them. Therefore, it depends on all three factors.

Multiple choice

A jet engine works on the principle of

  1. conservation of mass

  2. conservation of energy

  3. conservation of linear momentum

  4. conservation of angular momentum
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A jet engine operates by expelling high-speed exhaust gases backward, which creates an equal and opposite forward thrust according to Newton's third law, a direct application of the conservation of linear momentum.