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What is the kinetic energy of an object of mass 1.9kg travelling at 7m/s?

Give your answer to 2 decimal places.

User JeanLuc
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1 Answer

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Answer: The kinetic energy (KE) of an object is given by the formula:

KE = 1/2 * mass * velocity^2

Given that the mass of the object is 1.9 kg and the velocity is 7 m/s, we can substitute these values into the formula to calculate the kinetic energy:

KE = 1/2 * 1.9 kg * (7 m/s)^2

KE = 1/2 * 1.9 kg * 49 m^2/s^2

KE = 0.5 * 1.9 kg * 49 m^2/s^2

KE = 47.55 J (rounded to two decimal places)

So, the kinetic energy of the object is 47.55 Joules.

User InDieTasten
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