Question

How fast does a man Weighing 60 kilo Run so that his kinetic energy is 750 J find its velocity

Answer 1

Answer:

5 m/s

• Explanation:

 k.e = 1/2 mv^2

  750 = 1/2*60*v^2

   v^2 = 750*2/60

    =25*2/2

   = 25

v = $\sqrt{25}$ = 5m/s [ answer}

$\sqrt{x} \sqrt{25\\}$ {this is an error}

Answer 2

Answer

• Mass = 60 kg

• K.E = 750 J

• v = ?

→ K.E = (1/2)mv²

⇒ 750 = (1/2) × 60 × v²

⇒ v² = 150/6

⇒ v = √25

⇒ v = 5 m/s

∴  The man should run with a velocity of 5m/s