What speed would a fly with a mass of 0.72 g need in order to have the same kinetic energy as a 1250 kg automobile traveling at a speed of 11 m/s?

Kinetic of automobile

Mass m = 1,250 Kg; V = 11 m/s

Formula: K. E = 1/2 mV²

K. E = 1/2 (1,250 Kg) (11 m/s) ²

K. E = 75,625 J

Speed required for insect to have the same kinetic energy as automobile

Mass of insect = 0.72 g convert to Kg m = 7.2 x 10⁻⁴ Kg

K. E = 1/2 mV² Derive V = ?

V = 2 K. E/m

V = √2 (75,625 J) / 7.2 x 10⁻4 Kg

V = √2.1 x 10⁸ m²/s²

V = 14,491.34 m/s (velocity of insect)