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What is the mass of an object with a kinetic energy of 200,000 J and a velocity of 40 m/s?
Round your answer, if necessary, to the nearest hundredth.

Respuesta :

Answer:

Step-by-step explanation:250kg

oscar236

Answer:

250 kg

Step-by-step explanation:

Kinetic energy = 1/2mv^2  where K. E. is in Joules, m in kilograms and y in metres per second.

200000 = 1/2 m 40^2

200000 = 800m

m = 250 kg.

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