Question

If the KE of a body is 2600 J and the mass
is 13 kg then find the velocity. plz guys urgent​

Answer 1

$ke = \frac{1}{2} m {v}^{2}$

$2600 = \frac{1}{2} \times 13 \times {v}^{2}$

$\frac{2600 \times 2}{13} = {v}^{2}$

${v}^{2} = 400$

$v = \sqrt{400}$

$v = 20 \: m {s}^{ - 2}$

Answer 2

Given

• Kinetic Energy = 2600 J
• Mass = 13 kg

To Find

• Velocity of the body

Solution

● Kinetic Energy = ½mv²

✭ Velocity of the body :

→ Kinetic Energy = ½mv²

• Kinetic Energy = 2600 J
• m = Mass = 13 kg
• v = Velocity = ?

→ 2600 = ½ × 13 × v²

→ 2600 × 2 = 13v²

→ 5200 = 13v²

→ 5200/13 = v²

→ 400 = v²

→ v = √400

→ v = 20 m/s

∴ Velocity of the body is 20 m/s