The three equations are, v = u + at. v² = u² + 2as. s = ut + ½at²

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## How many formula are there in gravitation Class 9?

The three equation of motion viz. (iii) v2 – u2 = 2as are true for motion of objects under gravity. For free fall, value of acceleration a = g = 9.5 ms–2. If an object is just let fall from a height then in that as u = 0 and a = g = 9.8 m/s2.

## What is the formula of velocity Class 9?

In the equation V = d/t, V is the velocity, d is the distance and t is the time. Determine the object’s acceleration by dividing the object’s mass by the force and multiply the answer by the time it took for it to accelerate.

## What are the 12 types of motion?

- Oscillatory Motion.
- Rotational Motion.
- Translational Motion.
- Periodic Motion.
- Circular Motion.
- Linear Motion.
- Uniform Motion.
- Non-Uniform Motion.

## What are the 4 types of motion?

- linear.
- rotary.
- reciprocating.
- oscillating.

## What are the 4 laws of physics?

These four basic forces are known as fundamental because they alone are responsible for all observations of forces in nature. The four fundamental forces are gravity, electromagnetism, weak nuclear force, and strong nuclear force.

## What are the 3 formulas for force?

- a = v/t.
- F = mv/t.
- F = p/t = dp/dt.

## Is physics easy or hard?

Students and researchers alike have long understood that physics is challenging. But only now have scientists managed to prove it. It turns out that one of the most common goals in physics—finding an equation that describes how a system changes over time—is defined as “hard” by computer theory.

## What is g 9.8 called?

g is the acceleration of gravity 9.8 (m/s2) or the strength of the gravitational field (N/kg) (which it turns out is equivalent).

## What is the SI unit of gravity?

The unit of gravity is the same as the unit of force, i.e., Newton (N).

## What is the SI unit of gravitation?

Now, the gravitational force is another type of force. So, the SI unit of gravitational force will be the same as the SI unit of force which is N (newton). And, the SI unit of mass is kg. Note: The gravitational force between two objects of mass Mand m separated at a distance r, is F=GMmr2.

## What are the 4 types of velocity?

- Constant Velocity. An object with a constant velocity does not change in speed or direction.
- Changing Velocity. Objects with changing velocity exhibit a change in speed or direction over a period of time.
- Mathematics of Acceleration.
- Instant Velocity.
- Terminal Velocity.

## What is SI unit of velocity?

The SI unit of velocity is metres per second (m/s). Alternatively, the velocity magnitude can also be expressed in centimetres per second (cm/s).

## What is the formula of acceleration Class 9?

Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2).

## What are the 3 basic types of motion?

According to the nature of the movement, motion is classified into three types as follows: Linear Motion. Rotary Motion. Oscillatory Motion.

## What is rest physics?

Rest: An object is said to be at rest if it does not change its position with respect to its surroundings with time. Motion: An object is said to be in motion if the position changes with respect to it surrounding and time.

## What are the 2 classification of motion?

Motion along a straight line is called a rectilinear motion (e.g. motion of car in a straight line) and the motion of a body along a curved path is called curvilinear motion (e.g. the motion of a ball thrown in air, the motion of the earth around the Sun).

## What are the 6 motions?

A closer view offers a better look at the wind, currents, and wave action that influence how a ship moves in six degrees of motion: heave, sway, surge, roll, pitch, and yaw.

## What type of motion is a door?

Answer: Oscillatory Motion.

## What is irregular motion?

irregular motion is a motion which has no obvious patterns to its movement.it is often needed in automata to recreate the movement of living things. irregular motion is usually created by using a cam or series of cams.

## What are the 12 universal laws?

- #1: The Law of Divine Oneness. Everyone and everything is connected in the world we live in.
- #2: The Law of Energy or Vibration.
- #4: The Law of Correspondence.
- #5: The Law of Cause and Effect.
- #6: The Law of Compensation.
- #7: The Law of Attraction.
- #9: The Law of Relativity.
- #10: The Law of Polarity.

## How weak is gravity?

Gravity is a real weakling – 1040 times weaker than the electromagnetic force that holds atoms together. Although the other forces act over different ranges, and between very different kinds of particles, they seem to have strengths that are roughly comparable with each other. Gravity is the misfit.

## What are the 5 scientific laws?

What are the five scientific laws? The five most popular scientific laws are Hooke’s Law of Elasticity, Archimedes’ Principle of Buoyancy, Dalton’s Law of Partial Pressures, Bernoulli’s Law of Fluid Dynamics and Fourier’s Law of Heat Conduction.

## What are the 7 types of forces?

- Applied Force.
- Gravitational Force.
- Normal Force.
- Frictional Force.
- Air Resistance Force.
- Tension Force.
- Spring Force.

## What is the formula of energy?

Energy is defined as the capacity to do work. Formula. The energy stored in an object due to its position and height is known as potential energy and is given by the formula: P.E. = mgh. Unit.