Question

plz answer is with a proper explanation​

Answer 1

Answer:

• 2) 125%

Explanation:

Let,

• P₁ = 100
• P₂ = 150
• K₁ = 100
• K₂ = ?

We know that,

$\implies \bf K = \dfrac{p^2}{2m}$

Where,

• K ∝ b²

Now,

$\implies \sf \dfrac{k_2}{k_1} = \dfrac{p_2^2}{p_1^1}$

$\implies \sf \dfrac{k_2}{100} = \bigg( \dfrac{150}{100} \bigg)^2$

$\implies \sf \dfrac{9}{4}$

$\implies \sf k_2 = 225$

∴ Change in Kinetic energy (KE) is 125%.

____________________

Some concept related formulas :-

● Kinetic energy, KE = 1/2 mv²

Where,

• KE = Kinetic energy (Joule)
• m = mass (kg)
• v = velocity (m/s)

● Potential energy, PE = mgh

Where,

• PE = Potential energy (Joule)
• m = mass (kg)
• g = gravity (m/s²)
• h = height (m)

● Momentum, p = mv

Where,

• P = momentum
• m = mass
• v = velocity