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A 1kg mass is moving at 1m/s. What is its kinetic energy?

User Jorge Machado
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1 Answer

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KINETIC ENERGY

Problem:

» A 1kg mass is moving at 1m/s. What is its kinetic energy?

Answer:


  • \color{hotpink} \bold{0.5 \: J} \\

— — — — — — — — — —

Formula:

To calculate the velocity of a kinetic energy, we can use formula


  • \underline{ \boxed{ \tt KE = (1)/(2) m{v}^(2) } }

where,

  • v is the velocity in m/s
  • KE is the kinetic energy in J (joules)
  • m is the mass in kg

— — —

Based on the problem, the givens are:

  • KE (Kinetic energy) = ? (unknown)
  • m (mass) = 1 kg
  • v (velocity) = 1 m/s

Solution:

To get the velocity, substitute the givens in the formula above then solve.


\tt KE = (1)/(2) m{v}^(2) \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \tt KE = (1)/(2) * 1 * {(1)}^(2) \\ \tt \: \: \: \: \: \: \: \: \: \: \: \: \: KE = (1)/(2) *(1 * 1) \\ \tt \: \: \: KE = \underline{ \boxed{ \blue{ \tt0.5 \: J}}}

Therefore, the kinetic energy is 0.5 joules.

User Scnerd
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