Two objects of the same mass move along the same line in opposite directions. The first mass is moving with speed v. The objects collide, stick together, and move with speed 0.100v in the direction of the velocity of the first mass before the collision. What was the speed of the second mass before the collision? Lütfen birini seçin: O A. 0.600 v O B. 0.550 v O C. -0.650 v O D. 0.200 v E. -0.800 v

A radioactive element is kept inside a laboratory. Person A is stationary with respect to the lab. Person B is moving at a speed of 0.5c with respect to the lab. Person C is moving at a speed of 0.9c with respect to the lab. Which person will measure the shortest half-life A. Person C B. Person A C. All of them measure the same half-life D. Person B

What is the speed, in m/s, of a proton after being accelerated from rest through a 50 x 106 V potential difference?

10 L Special Relativity predicts that high-energy electrons increase in mass as they approach the speed of light. What kinetic energy will an electron have if it is travelling at 99.875% of the speed of light? Give your answer in MeV and in J. How many times greater is your result than the value the classical formula mv² gives? G AU