## What is the 4 in physics?

According to the present understanding, there are four fundamental interactions or forces: gravitation, electromagnetism, the weak interaction, and the strong interaction.

**How many equations of motion are there in physics?**

three equations

The three equations of motion are known as kinematic equations. Quantities associated with these kinematics equations are – displacement (and distance), velocity (and speed), acceleration, and time.

### Is there any fourth equation of motion?

There is no 4th equation of motion.

**What are three motion equations?**

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

#### What is the third equation of motion?

The third equation of motion gives the final velocity of an object under uniform acceleration given the distance traveled and an initial velocity: v 2 = v 0 2 + 2 a d . v^2=v_0^2+2ad.

**What are the 4 fundamental forces in order of strength?**

Ordered from strongest to weakest, the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity.

## What are the 4 equations for acceleration?

There are four kinematic equations when the initial starting position is the origin, and the acceleration is constant:

- v=v0+at. v = v 0 + at.
- d=12(v0+v)t d = 1 2 ( v 0 + v ) t or alternatively vaverage=dt. v average = d t.
- d=v0t+(at22)
- v2=v20+2ad.

**What are the 3 equations of motion?**

### Is 4th equation of motion dimensionally correct?

Yes it is, You might be thinking that where on Earth metre and metre per second are equal. For this, you might need to see it’s derivation. Hope this helps and sorry for bad handwriting. :P.

**What is the use of 4th equation of motion?**

To derive the fourth equation of motion, first we have to consider the equation for acceleration and then to rearrange it. or v2 = u2 + 2as and this equation of motion can be used to find the final velocity or the distance travelled if the other values are given.

#### What is 2nd equation of motion?

The second equation of motion gives the displacement of an object under constant acceleration: x = x 0 + v 0 t + 1 2 a t 2 .

**What are the four equations of motion?**

In circumstances of constant acceleration, these simpler equations of motion are usually referred to as the SUVAT equations, arising from the definitions of kinematic quantities: displacement (s), initial velocity (u), final velocity (v), acceleration (a), and time (t).

## How do you derive the equation of motion?

Derivation of First Equation of Motion: The first equation of motion is->. v = u + at. Derivation of 1st Equation of Motion by Algebraic Method: It is known that the acceleration (a) of the body is defined as the rate of change of velocity.

**What is the formula for the law of motion?**

Newtonian mechanics. The first general equation of motion developed was Newton ‘s second law of motion, in its most general form states the rate of change of momentum p = p(t) = mv(t) of an object equals the force F = F(x(t), v(t), t) acting on it, The force in the equation is not the force the object exerts.

### What is the first equation of motion?

First equation of motion. The first equation of motion is mainly derived from the definition of acceleration. You would remember that acceleration is the rate of change of velocity with time and that the equation to calculate it is. acceleration = (change in velocity)/time taken.

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