Question

what is the kinetic energy of a car of mass of900kg moving with a velocity of 60 m / s
numerical problem

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Answer 1

Answer:

kineticenergy(ke)=

2

1

mv

2

= \frac{1}{2} \times \frac{900}{1000} \times ( {60})^{2}=

2

1

×

1000

900

×(60)

2

\frac{1}{2} \times 0.9 \times 3600

2

1

×0.9×3600

0.9 \times 18000.9×1800

\frac{9}{10} \times 1800

10

9

×1800

= 9 \times 180 = 1620 \frac{m}{s}=9×180=1620

s

m