Answer :
To compare the kinetic energies of the truck and the astronaut, we can use the formula:
[tex]KE = 1/2 * m * v^2[/tex]
where KE is the kinetic energy, m is the mass, and v is the velocity.
For the truck, we have:
m = 20,500 kg
v = 145 km/h = 40.28 m/s
Using the formula, we get:
[tex]KE_truck = 1/2 * 20,500 kg * (40.28 m/s)^2 = 16,605,352 J[/tex]
For the astronaut, we have:
m = 83.5 kg
v = 27,000 km/h = 7,500 m/s
Using the formula, we get:
[tex]KE_astronaut = 1/2 * 83.5 kg * (7,500 m/s)^2 = 23,484,375,000 J[/tex]
Therefore, the kinetic energy of the astronaut is much greater than the kinetic energy of the truck.
In fact, the kinetic energy of the astronaut is about 1,413 times greater than that of the truck! This is because the kinetic energy is proportional to the mass and the square of the velocity, and the velocity of the astronaut in orbit is much greater than the velocity of the truck on the road.
To know more about kinetic energies :
https://brainly.com/question/26472013
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