Question

proof V2=U2+2as? solve
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Answer 1

Answer:

Hey mate, Here's ur answer...!!

Explanation:

Pls refer to the attached file

Answer 2

Answer:

To find the acceleration distance of velocity when time t is not given.

Relationship between u, v, a and s.

As we know that the first equation of motion says that:

v = u + at

So, we have to take the first equation of motion to prove the third equation of motion.

v = u + at

and

s = u + v / 2 × t

[ °.° Distance travelled = average velocity × time ]

By rearranging these two equations

We have

v - u = at ----------(1)

u + v = 2s/t ------(2)

Now,

multiplying equation 1 and equation 2, we get

=> (v - u) × (v + u) = at × 2s/t

=> v² - u² = 2as

Thus, velocity acquired by a body in travelling a distance can be found out from the equation.