1.si un automovil de 3000 kg se desplaza a 40 m/s su energía cinética es igual a A) 2.400.000J
B) 3.500.000J
C) 3.600.000J
D) 4.800.000J

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created

Aspaceship starting from a resting position accelerates at a constant rate of 9.8 meters per second per second. how far will the spaceship travel if its final speed is 1 percent the speed of light (300,000,000 m/s)? a. 3.1 × 106 m b. 2.94 × 108 m c. 7.8 × 1010 m d. 4.6 × 1013 m