Question

plss help
kinetic energy can be calculated using the formula KE= 1/2 mv2, where m=mass and v=velocity. Calculate the kinetic energy of an object with a mass 5kg moving at a velocity of 4m/s.

Answer 1

$\frac{1}{2} \times 5 \times 16 \\ 40 \\ ke = 40joules$

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Answer 2

$ke = 5kg \times 4 ^{2}ms \div 2 \\ = 5 \times 16 \div 2 \\ = 40 \: joules \:$