#5 What is the mass of an object that creates 33,750 joules of energy by traveling at 30 m/sec? (KE=1/2mv2)
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1 point
2250 kg
506250 kg
75 kg
1125 kg
To find the mass of the object, we can rearrange the formula for kinetic energy:
KE = 1/2mv^2
Rearranging the formula gives us:
m = (2KE) / v^2
Plugging in the given values:
KE = 33,750 J
v = 30 m/sec
m = (2 * 33,750 J) / (30 m/sec)^2
m = 67,500 J / 900 m^2/sec^2
m = 75 kg
Therefore, the mass of the object is 75 kg. The correct answer is: 75 kg.