a. A bullet of mass 200 g is fired a velocity of 100 m/s. what is kinetic energy?
b. A body of mass 5 kg has kinetic energy of 1000 J. calculate its speed.
ahyaindo:
please very urgent.. help me about true answer
a.is 10kj right by using 1/2mv^2 formulae
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b. K=1/2×mass×velocity square
1000=1/2×5×velocity square
velocity square =400
velocity =20
1000=1/2×5×velocity square
velocity square =400
velocity =20
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