Question

What is the kinetic energy of an 14kg cart that is moving with a speed of 6 m/s?

Answer 1

• Mass=m=14kg
• Velocity=v=6m/s

`\\ \sf\longmapsto K.E=(1)/(2)mv^2`

`\\ \sf\longmapsto K.E=(1)/(2)(14)(6)^2`

`\\ \sf\longmapsto K.E=7(36)`

`\\ \sf\longmapsto K E=252J`

Answer 2

`252J`

Step-by-step explanation

Formula to find the kinetic energy is,

`E_(k) = (1)/(2) m {v}^(2) \\ \\ m = mass(kg) \\ v = velocity( {ms}^( - 1) )`

Lets solve

`E_(k) = (1)/(2) m {v}^(2) \\ = (1)/(2) * 14kg * 6 {ms}^( - 1) * 6 {ms}^( - 1) \\ = (504)/(2) \\ = 252J`

hope this helps you.

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