Two objects move with a speed of 17 m/s . One has a KE of 3300 J and the other has a KE of 750000 J. What are their respective masses?
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Answer:
KE = ½mv²
OBJECT 1 =
ke = 3300J
v = 17m/s
therefore mass = x
=> ½×x×17² = 3300
=> 289x = 6600
=> x = 6600/289
=> x = 22.84kg = mass of object 1
OBJECT 2 =
ke = 750000
v = 17m/s
mass = y
=> ½y×17² = 750000
=> 289y = 1500000
=> y = 1500000/289
=> y = 5190.31 kg
hope it helped :)
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