Question

Imagine a 15kg block moving with a speed of 20m/s. Calculate the kinetic energy of this block.

Can someone please explain how they got each step and how the data is lined up? ​

Answer 1

The kinetic energy formula is;

• 
  `KE=(m.v^2)/(2)`

The variable
`m` represents the mass. Its unit is kilogram. We are informed that the mass of the object is
`15kg`. The variable
`v` represents the linear velocity. Its unit is meter per second. We are informed that the linear velocity of the object is
`20m/s`. Let's find the kinetic energy of the object by substituting these values in the formula.

• 
  `KE=(15kg.(20m/s)^2)/(2)`
• 
  `2.KE=15kg.400m^2/s^2`
• 
  `2.KE=(6000)kgm^2/s^2`
• 
  `KE=(3000)kgm^2/s^2=3000J`