Pakai cara

Langkah 1 Let the rest mass of the object be m, and its relativistic mass be M. According to the theory of relativity, the relativistic mass M is related to the rest mass m by the equation M = m / sqrt(1 - v2/c2), where v is the velocity of the object and c is the speed of light. Langkah 2 The question states that the mass of the object should be 300% of its rest mass. This means M = 3m. Langkah 3 Substitute M = 3m into the relativistic mass equation: 3m = m / sqrt(1 - v2/c2). Langkah 4 Square both sides of the equation to get 9m^2 = m^2 / (1 - v2/c2). Langkah 5 Simplify the equation to get 9 = 1 / (1 - v2/c2). Langkah 6 Cross multiply to get 9 - 9v2/c2 = 1. Langkah 7 Rearrange the equation to get 9v2/c2 = 8. Langkah 8 Solve for v2/c2 to get v2/c2 = 8/9. Langkah 9 Take the square root of both sides to get v/c = sqrt(8/9). Langkah 10 Simplify to get v/c = 2/3. Langkah 11 The velocity of the object should be 2/3 times the speed of light for its mass to be 300% of its rest mass. Jawaban akhir B. 0,6