Question

if a car moves with energy of 2500J if it's mass is 1000kg find it's velocity​

Answer 1

☀️ Given that: A car of mass 1,000kg moves with energy of 2500J

    Need to find: Velocity of the car

Must Understand:

• Kinetic energy is a form of energy possessed by an object due to its motion.

• Formula of Kinetic Energy = 1/2mv²

Where,

m is mass

v is velocity

Solution:

→ 2500 = 1/2 × 1000 × v²

→ 2500 = 500 × v²

→ v² = 2500/500

→ v² = 5

→ v = √5 m/s

→ v = 2.23 m/s ( approx )

⠀━━━━━━━━━━━━━━━━━━━  

• Henceforth, Velocity of the car is √5 m/s

Answer 2

Answer:

We know,

Kinetic energy = 1/2mv^2

So,

$2500 \: = \frac{1}{2} \times 1000 \times {v}^{2} \\ \\ 2500= 500 \times {v}^{2} \\ \frac{2500}{500} = {v}^{2} \\ 5 = {v}^{2} \\ 2.23 = v \\ therefore \: velocity \: = 2.23m {s}^{ - }$

Refer the attachment also