Show that the expressions (ds)2 (c dt)2- (dx)2 - (dy) - (dz)2 is invariant (i. e, a scalar quantity) under lorentz transformations. this is the "four-dimensional distance" between events and is also known as the metric. show that if (ds)2 < 0 the two events cannot be causally connected, i. e., there cannot not be any information transmitted from one to the other even at light speed

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

Physical science b final exam bernoulli’smovepowercompound translucent the sun i was having such a pain for this searching every question so i hope i made someone happy