The largest airplane built that has flown more than once is the Ukrainian-built Antonov-225 Mriya. With a length of 85 m and a wingspan of 88 m, the Mriya

(Dream) was designed to carry the space shuttle of the Soviet Union’s space

program. Unloaded, the top speed of Mriya is 236 m/s, at which its kinetic

energy is 9.76 × 109 J. What is it’s mass?

m = 350474 [kg]

Explanation:

In order to solve this problem we must remember the definition of kinetic energy, which can be easily calculated by means of the following equation.

where:

Ek = kinetic energy = 9.76*10^9[J]

m = mass [kg]

v = velocity = 236 [m/s]

Now replacing and solving the equation.

9.76*10^9 = 0.5*m*(236)^2

m = 9.76*10^9 / (0.5*236^2)

m = 350474 [kg]

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.