Question

What is the kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s?

Answer 1

Answer:

25m/s2

Explanation:

solve by k=1/2mv2

Answer 2

AnswEr :

›»› The kinetic energy of a ball is 25 Joules (J).

Explanation :

Given :

• Mass of a ball = 0.5 kg.
• Velocity of a body = 10 m/s.

To Calculate :

• Kinetic energy of a ball = ?

Calculation :

We know that, if we are given with the mass of a ball and velocity of a ball then we have the required formula, that is,

→ KE = ½ mv².

Here,

• KE is the Kinetic energy of a ball.
• m is the mass of a ball.
• v is the Velocity of a ball.

Units,

• The unit of Kinetic energy is Joules (m).
• The unit of mass is kilogram (kg).
• The unit of Velocity is meter per second (m/s).

Substituting the all given values in the formula, we get :

→ KE = ½ × 0.5 × (10)²

→ KE = ½ × 0.5 × 100

→ KE = 1 × 0.5 × 50

→ KE = 1 × 5/10 × 50

→ KE = 1 × 5 × 5

→ KE = 5 × 5

→ KE = 25

Hence, the kinetic energy of a ball is 25 Joules (J).