Question

A bullet of mass 50g is moving with a velocity of 500ms-1. Find kinetic energy​

Answer 1

Answer:

6250 J

Explanation:

As per the provided information in the given question, we have :

• Mass of bullet = 50g ⇒ 0.05 kg
• Velocity of bullet = 500 m/s

We are asked to calculate the kinetic energy of the bullet.

As we know that,

⇒ K.E = ½mv²

• K.E denotes kinetic energy
• m denotes mass
• v denotes velocity/speed

Substituting values in the formula.

⇒ K.E = ½ × 0.05 × (500)²

⇒ K.E = ½ × 0.05 × 250000

⇒ K.E = 1 × 0.05 × 125000

⇒ K.E = 6250 J

∴ Kinetic energy of the bullet is 6250 J.

$\rule{200}2$

Learn More :

• Kinetic energy can be defined as the energy of the object because of its motion.
• Kinetic energy is directly proportional to the mass of the object.
• Kinetic energy is directly proportional to the square of the velocity/speed of the object.
• SI unit of K.E is Joule.

Answer 2

Answer:

k.E =1/2mv^2

=1/2x50x50x500x500

=1/2x2500x250000

=1/2x625000000

=312500000