Why speed = distance/time?
64822
Why is speed defined like it is?
132106
Why does the speed of light $c$ have the value it does?
85291
Why can velocity and acceleration be negative?
53455
Relativistic speed/energy relation. Is this correct?
50651
Does special relativity imply that time dilation is affected by an orientation of clocks?
55971
Why does the (relativistic) mass of an object increase when its speed approaches that of light?
81663
Why does gravity travel at the speed of light?
31825
Why are objects at rest in motion through spacetime at the speed of light?
144054
If starting speed is faster than terminal velocity then what?
127383
Speed of light in general relativity
9016
How can time dilation be symmetric?
113516
Why can we only add or subtract things of the same dimension (meters/second, newtons, etc)?
42045
Decimal vs Double Speed
22889
Why normal acceleration doesn't bring a change in speed?
17515
Why is negative times negative = positive?
41250
Speed of object towards a point not in the object's trajectory?
34400
Special Relativity - Regarding the Simultaneity of Events During the Train Paradox