Question

a block of mass 2 kg moving at a speed of 10 m per second accelerate at 3M per second square for 5 seconds compute its final kinetic energy

Answer 1

V = u + at
10 + 3×5
10+ 15
= 25 m/ s
$k.e = \frac{1}{2} mv {}^{2} \\ \frac{1}{2} \times 2 \times {25}^{2} \\ = 625 \: joules$
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